**\u683c\u5f0f\u5b57\u4e32\u53ef\u4ee5\u8bc6\u522b\u4ee5\u4e0b `format<\/code> \u53c2\u6570\u7684\u5b57\u7b26\u4e32<\/strong><\/caption>\n`**
`format<\/code>\u5b57\u7b26<\/th>\n`	\u8bf4\u660e<\/th>\n	\u8fd4\u56de\u503c\u4f8b\u5b50<\/th>\n<\/tr>\n<\/thead>\n
\u65e5<\/em><\/td>\n	—<\/td>\n	—<\/td>\n<\/tr>\n
d<\/em><\/td>\n	\u6708\u4efd\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u6709\u524d\u5bfc\u96f6\u7684 2 \u4f4d\u6570\u5b57<\/td>\n	01<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n
D<\/em><\/td>\n	\u661f\u671f\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u6587\u672c\u8868\u793a\uff0c3 \u4e2a\u5b57\u6bcd<\/td>\n	Mon<\/em> \u5230 Sun<\/em><\/td>\n<\/tr>\n
j<\/em><\/td>\n	\u6708\u4efd\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u6ca1\u6709\u524d\u5bfc\u96f6<\/td>\n	1<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n
l<\/em>\uff08\u201cL\u201d\u7684\u5c0f\u5199\u5b57\u6bcd\uff09<\/td>\n	\u661f\u671f\u51e0\uff0c\u5b8c\u6574\u7684\u6587\u672c\u683c\u5f0f<\/td>\n	Sunday<\/em> \u5230 Saturday<\/em><\/td>\n<\/tr>\n
N<\/em><\/td>\n	ISO-8601 \u683c\u5f0f\u6570\u5b57\u8868\u793a\u7684\u661f\u671f\u4e2d\u7684\u7b2c\u51e0\u5929\uff08PHP 5.1.0 \u65b0\u52a0\uff09<\/td>\n	1<\/em>\uff08\u8868\u793a\u661f\u671f\u4e00\uff09\u5230 7<\/em>\uff08\u8868\u793a\u661f\u671f\u5929\uff09<\/td>\n<\/tr>\n
S<\/em><\/td>\n	\u6bcf\u6708\u5929\u6570\u540e\u9762\u7684\u82f1\u6587\u540e\u7f00\uff0c2 \u4e2a\u5b57\u7b26<\/td>\n	st<\/em>\uff0cnd<\/em>\uff0crd<\/em> \u6216\u8005 th<\/em>\u3002\u53ef\u4ee5\u548c j<\/em> \u4e00\u8d77\u7528<\/td>\n<\/tr>\n
w<\/em><\/td>\n	\u661f\u671f\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u6570\u5b57\u8868\u793a<\/td>\n	0<\/em>\uff08\u8868\u793a\u661f\u671f\u5929\uff09\u5230 6<\/em>\uff08\u8868\u793a\u661f\u671f\u516d\uff09<\/td>\n<\/tr>\n
z<\/em><\/td>\n	\u5e74\u4efd\u4e2d\u7684\u7b2c\u51e0\u5929<\/td>\n	0<\/em> \u5230 365<\/em><\/td>\n<\/tr>\n
\u661f\u671f<\/em><\/td>\n	—<\/td>\n	—<\/td>\n<\/tr>\n
W<\/em><\/td>\n	ISO-8601 \u683c\u5f0f\u5e74\u4efd\u4e2d\u7684\u7b2c\u51e0\u5468\uff0c\u6bcf\u5468\u4ece\u661f\u671f\u4e00\u5f00\u59cb\uff08PHP 4.1.0 \u65b0\u52a0\u7684\uff09<\/td>\n	\u4f8b\u5982\uff1a42<\/em>\uff08\u5f53\u5e74\u7684\u7b2c 42 \u5468\uff09<\/td>\n<\/tr>\n
\u6708<\/em><\/td>\n	—<\/td>\n	—<\/td>\n<\/tr>\n
F<\/em><\/td>\n	\u6708\u4efd\uff0c\u5b8c\u6574\u7684\u6587\u672c\u683c\u5f0f\uff0c\u4f8b\u5982 January \u6216\u8005 March<\/td>\n	January<\/em> \u5230 December<\/em><\/td>\n<\/tr>\n
m<\/em><\/td>\n	\u6570\u5b57\u8868\u793a\u7684\u6708\u4efd\uff0c\u6709\u524d\u5bfc\u96f6<\/td>\n	01<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n
M<\/em><\/td>\n	\u4e09\u4e2a\u5b57\u6bcd\u7f29\u5199\u8868\u793a\u7684\u6708\u4efd<\/td>\n	Jan<\/em> \u5230 Dec<\/em><\/td>\n<\/tr>\n
n<\/em><\/td>\n	\u6570\u5b57\u8868\u793a\u7684\u6708\u4efd\uff0c\u6ca1\u6709\u524d\u5bfc\u96f6<\/td>\n	1<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n
t<\/em><\/td>\n	\u7ed9\u5b9a\u6708\u4efd\u6240\u5e94\u6709\u7684\u5929\u6570<\/td>\n	28<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n
\u5e74<\/em><\/td>\n	—<\/td>\n	—<\/td>\n<\/tr>\n
L<\/em><\/td>\n	\u662f\u5426\u4e3a\u95f0\u5e74<\/td>\n	\u5982\u679c\u662f\u95f0\u5e74\u4e3a 1<\/em>\uff0c\u5426\u5219\u4e3a 0<\/em><\/td>\n<\/tr>\n
o<\/em><\/td>\n	ISO-8601 \u683c\u5f0f\u5e74\u4efd\u6570\u5b57\u3002\u8fd9\u548c Y<\/em>\u7684\u503c\u76f8\u540c\uff0c\u53ea\u9664\u4e86\u5982\u679c ISO \u7684\u661f\u671f\u6570\uff08W<\/em>\uff09\u5c5e\u4e8e\u524d\u4e00\u5e74\u6216\u4e0b\u4e00\u5e74\uff0c\u5219\u7528\u90a3\u4e00\u5e74\u3002\uff08PHP 5.1.0 \u65b0\u52a0\uff09<\/td>\n	Examples: 1999<\/em> or 2003<\/em><\/td>\n<\/tr>\n
Y<\/em><\/td>\n	4 \u4f4d\u6570\u5b57\u5b8c\u6574\u8868\u793a\u7684\u5e74\u4efd<\/td>\n	\u4f8b\u5982\uff1a1999<\/em> \u6216 2003<\/em><\/td>\n<\/tr>\n
y<\/em><\/td>\n	2 \u4f4d\u6570\u5b57\u8868\u793a\u7684\u5e74\u4efd<\/td>\n	\u4f8b\u5982\uff1a99<\/em> \u6216 03<\/em><\/td>\n<\/tr>\n
\u65f6\u95f4<\/em><\/td>\n	—<\/td>\n	—<\/td>\n<\/tr>\n
a<\/em><\/td>\n	\u5c0f\u5199\u7684\u4e0a\u5348\u548c\u4e0b\u5348\u503c<\/td>\n	am<\/em> \u6216 pm<\/em><\/td>\n<\/tr>\n
A<\/em><\/td>\n	\u5927\u5199\u7684\u4e0a\u5348\u548c\u4e0b\u5348\u503c<\/td>\n	AM<\/em> \u6216 PM<\/em><\/td>\n<\/tr>\n
B<\/em><\/td>\n	Swatch Internet \u6807\u51c6\u65f6<\/td>\n	000<\/em> \u5230 999<\/em><\/td>\n<\/tr>\n
g<\/em><\/td>\n	\u5c0f\u65f6\uff0c12 \u5c0f\u65f6\u683c\u5f0f\uff0c\u6ca1\u6709\u524d\u5bfc\u96f6<\/td>\n	1<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n
G<\/em><\/td>\n	\u5c0f\u65f6\uff0c24 \u5c0f\u65f6\u683c\u5f0f\uff0c\u6ca1\u6709\u524d\u5bfc\u96f6<\/td>\n	0<\/em> \u5230 23<\/em><\/td>\n<\/tr>\n
h<\/em><\/td>\n	\u5c0f\u65f6\uff0c12 \u5c0f\u65f6\u683c\u5f0f\uff0c\u6709\u524d\u5bfc\u96f6<\/td>\n	01<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n
H<\/em><\/td>\n	\u5c0f\u65f6\uff0c24 \u5c0f\u65f6\u683c\u5f0f\uff0c\u6709\u524d\u5bfc\u96f6<\/td>\n	00<\/em> \u5230 23<\/em><\/td>\n<\/tr>\n
i<\/em><\/td>\n	\u6709\u524d\u5bfc\u96f6\u7684\u5206\u949f\u6570<\/td>\n	00<\/em> \u5230 59<\/em>><\/td>\n<\/tr>\n
s<\/em><\/td>\n	\u79d2\u6570\uff0c\u6709\u524d\u5bfc\u96f6<\/td>\n	00<\/em> \u5230 59<\/em>><\/td>\n<\/tr>\n
u<\/em><\/td>\n	\u6beb\u79d2 \uff08PHP 5.2.2 \u65b0\u52a0\uff09\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f date()<\/strong><\/span> \u51fd\u6570\u603b\u662f\u8fd4\u56de000000<\/em> \u56e0\u4e3a\u5b83\u53ea\u63a5\u53d7 integer<\/a><\/span>\u53c2\u6570\uff0c \u800c DateTime::format()<\/a><\/span>\u624d\u652f\u6301\u6beb\u79d2\u3002<\/td>\n	\u793a\u4f8b: 654321<\/em><\/td>\n<\/tr>\n
\u65f6\u533a<\/em><\/td>\n	—<\/td>\n	—<\/td>\n<\/tr>\n
e<\/em><\/td>\n	\u65f6\u533a\u6807\u8bc6\uff08PHP 5.1.0 \u65b0\u52a0\uff09<\/td>\n	\u4f8b\u5982\uff1aUTC<\/em>\uff0cGMT<\/em>\uff0cAtlantic\/Azores<\/em><\/td>\n<\/tr>\n
I<\/em><\/td>\n	\u662f\u5426\u4e3a\u590f\u4ee4\u65f6<\/td>\n	\u5982\u679c\u662f\u590f\u4ee4\u65f6\u4e3a 1<\/em>\uff0c\u5426\u5219\u4e3a 0<\/em><\/td>\n<\/tr>\n
O<\/em><\/td>\n	\u4e0e\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\u76f8\u5dee\u7684\u5c0f\u65f6\u6570<\/td>\n	\u4f8b\u5982\uff1a+0200<\/em><\/td>\n<\/tr>\n
P<\/em><\/td>\n	\u4e0e\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\uff08GMT\uff09\u7684\u5dee\u522b\uff0c\u5c0f\u65f6\u548c\u5206\u949f\u4e4b\u95f4\u6709\u5192\u53f7\u5206\u9694\uff08PHP 5.1.3 \u65b0\u52a0\uff09<\/td>\n	\u4f8b\u5982\uff1a+02:00<\/em><\/td>\n<\/tr>\n
T<\/em><\/td>\n	\u672c\u673a\u6240\u5728\u7684\u65f6\u533a<\/td>\n	\u4f8b\u5982\uff1aEST<\/em>\uff0cMDT<\/em>\uff08\u3010\u8bd1\u8005\u6ce8\u3011\u5728 Windows \u4e0b\u4e3a\u5b8c\u6574\u6587\u672c\u683c\u5f0f\uff0c\u4f8b\u5982\u201cEastern Standard Time\u201d\uff0c\u4e2d\u6587\u7248\u4f1a\u663e\u793a\u201c\u4e2d\u56fd\u6807\u51c6\u65f6\u95f4\u201d\uff09\u3002<\/td>\n<\/tr>\n
Z<\/em><\/td>\n	\u65f6\u5dee\u504f\u79fb\u91cf\u7684\u79d2\u6570\u3002UTC \u897f\u8fb9\u7684\u65f6\u533a\u504f\u79fb\u91cf\u603b\u662f\u8d1f\u7684\uff0cUTC \u4e1c\u8fb9\u7684\u65f6\u533a\u504f\u79fb\u91cf\u603b\u662f\u6b63\u7684\u3002<\/td>\n	-43200<\/em> \u5230 43200<\/em><\/td>\n<\/tr>\n
\u5b8c\u6574\u7684\u65e5\u671f\uff0f\u65f6\u95f4<\/em><\/td>\n	—<\/td>\n	—<\/td>\n<\/tr>\n
c<\/em><\/td>\n	ISO 8601 \u683c\u5f0f\u7684\u65e5\u671f\uff08PHP 5 \u65b0\u52a0\uff09<\/td>\n	2004-02-12T15:19:21+00:00<\/td>\n<\/tr>\n
r<\/em><\/td>\n	RFC 822 \u683c\u5f0f\u7684\u65e5\u671f<\/td>\n	\u4f8b\u5982\uff1aThu, 21 Dec 2000 16:01:07 +0200<\/em><\/td>\n<\/tr>\n
U<\/em><\/td>\n	\u4ece Unix \u7eaa\u5143\uff08January 1 1970 00:00:00 GMT\uff09\u5f00\u59cb\u81f3\u4eca\u7684\u79d2\u6570<\/td>\n	\u53c2\u89c1 time()<\/a><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u683c\u5f0f\u5b57\u4e32\u4e2d\u4e0d\u80fd\u88ab\u8bc6\u522b\u7684\u5b57\u7b26\u5c06\u539f\u6837\u663e\u793a\u3002Z<\/em> \u683c\u5f0f\u5728\u4f7f\u7528 gmdate()<\/a><\/span> \u65f6\u603b\u662f\u8fd4\u56de0<\/em>\u3002<\/p>\n \n Example #1 date()<\/span> \u4f8b\u5b50<\/strong><\/p>\n \n <?php \n\/\/\u00a0\u8bbe\u5b9a\u8981\u7528\u7684\u9ed8\u8ba4\u65f6\u533a\u3002\u81ea\u00a0PHP\u00a05.1\u00a0\u53ef\u7528 \ndate_default_timezone_set('UTC');<\/p>\n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aMonday \necho\u00a0date(\"l\");<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aMonday\u00a015th\u00a0of\u00a0August\u00a02005\u00a003:12:46\u00a0PM \necho\u00a0date('l\u00a0dS\u00a0\\of\u00a0F\u00a0Y\u00a0h:i:s\u00a0A');<\/p>\n \/\/\u00a0\u8f93\u51fa\uff1aJuly\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0Saturday \necho\u00a0\"July\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0\"\u00a0.\u00a0date(\"l\",\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000));<\/p>\n \/\u00a0\u5728\u683c\u5f0f\u53c2\u6570\u4e2d\u4f7f\u7528\u5e38\u91cf\u00a0\/ \n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aWed,\u00a025\u00a0Sep\u00a02013\u00a015:28:57\u00a0-0700 \necho\u00a0date(DATE_RFC2822);<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a2000-07-01T00:00:00+00:00 \necho\u00a0date(DATE_ATOM,\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000)); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n \u5728\u683c\u5f0f\u5b57\u4e32\u4e2d\u7684\u5b57\u7b26\u524d\u52a0\u4e0a\u53cd\u659c\u7ebf\u6765\u8f6c\u4e49\u53ef\u4ee5\u907f\u514d\u5b83\u88ab\u6309\u7167\u4e0a\u8868\u89e3\u91ca\u3002\u5982\u679c\u52a0\u4e0a\u53cd\u659c\u7ebf\u540e\u7684\u5b57\u7b26\u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u7279\u6b8a\u5e8f\u5217\uff0c\u90a3\u8fd8\u8981\u8f6c\u4e49\u53cd\u659c\u7ebf\u3002<\/p>\n\nExample #2 \u5728 date()<\/span> \u4e2d\u8f6c\u4e49\u5b57\u7b26<\/strong><\/p>\n\n<?php \n\/\/\u00a0prints\u00a0something\u00a0like:\u00a0Wednesday\u00a0the\u00a015th \necho\u00a0date(\"l\u00a0\\\\t\\h\\e\u00a0jS\"); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u53ef\u4ee5\u628a date()<\/strong><\/span> \u548c mktime()<\/a><\/span> \u51fd\u6570\u7ed3\u5408\u4f7f\u7528\u6765\u5f97\u5230\u672a\u6765\u6216\u8fc7\u53bb\u7684\u65e5\u671f\u3002<\/p>\n \nExample #3 date()<\/span> \u548c mktime()<\/a><\/span> \u4f8b\u5b50<\/strong><\/p>\n \n<?php \n$tomorrow\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")\u00a0\u00a0,\u00a0date(\"d\")+1,\u00a0date(\"Y\")); \n$lastmonth\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")-1,\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")); \n$nextyear\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\"),\u00a0\u00a0\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")+1); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\nNote<\/strong>:<\/p>\n \u7531\u4e8e\u590f\u4ee4\u65f6\u7684\u7f18\u6545\uff0c\u8fd9\u79cd\u65b9\u6cd5\u6bd4\u7b80\u5355\u5730\u5728\u65f6\u95f4\u6233\u4e0a\u52a0\u51cf\u4e00\u5929\u6216\u8005\u4e00\u4e2a\u6708\u7684\u79d2\u6570\u66f4\u53ef\u9760\u3002<\/p>\n<\/blockquote>\n \u4e00\u4e9b\u4f7f\u7528 date()<\/strong><\/span> \u683c\u5f0f\u5316\u65e5\u671f\u7684\u4f8b\u5b50\u3002\u6ce8\u610f\u8981\u8f6c\u4e49\u6240\u6709\u5176\u5b83\u7684\u5b57\u7b26\uff0c\u56e0\u4e3a\u76ee\u524d\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\u4f1a\u4ea7\u751f\u4e0d\u9700\u8981\u7684\u7ed3\u679c\uff0c\u800c\u5176\u4f59\u5b57\u7b26\u5728 PHP \u5c06\u6765\u7684\u7248\u672c\u4e2d\u53ef\u80fd\u4f1a\u88ab\u7528\u4e0a\u3002\u5f53\u8f6c\u4e49\u65f6\uff0c\u6ce8\u610f\u7528\u5355\u5f15\u53f7\u4ee5\u907f\u514d\u7c7b\u4f3c \\n \u7684\u5b57\u7b26\u53d8\u6210\u4e86\u6362\u884c\u7b26\u3002<\/p>\n\nExample #4 date()<\/span> \u683c\u5f0f\u4e3e\u4f8b<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u5047\u5b9a\u4eca\u5929\u662f\uff1aMarch\u00a010th,\u00a02001,\u00a05:16:18\u00a0pm \n$today\u00a0=\u00a0date(\"F\u00a0j,\u00a0Y,\u00a0g:i\u00a0a\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0March\u00a010,\u00a02001,\u00a05:16\u00a0pm \n$today\u00a0=\u00a0date(\"m.d.y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a003.10.01 \n$today\u00a0=\u00a0date(\"j,\u00a0n,\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a010,\u00a03,\u00a02001 \n$today\u00a0=\u00a0date(\"Ymd\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a020010310 \n$today\u00a0=\u00a0date('h-i-s,\u00a0j-m-y,\u00a0it\u00a0is\u00a0w\u00a0Day\u00a0z\u00a0');\u00a0\u00a0\/\/\u00a005-16-17,\u00a010-03-01,\u00a01631\u00a01618\u00a06\u00a0Fripm01 \n$today\u00a0=\u00a0date('\\i\\t\u00a0\\i\\s\u00a0\\t\\h\\e\u00a0jS\u00a0\\d\\a\\y.');\u00a0\u00a0\u00a0\/\/\u00a0It\u00a0is\u00a0the\u00a010th\u00a0day. \n$today\u00a0=\u00a0date(\"D\u00a0M\u00a0j\u00a0G:i:s\u00a0T\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0Sat\u00a0Mar\u00a010\u00a015:16:08\u00a0MST\u00a02001 \n$today\u00a0=\u00a0date('H:m:s\u00a0\\m\u00a0\\i\\s\\\u00a0\\m\\o\\n\\t\\h');\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:03:17\u00a0m\u00a0is\u00a0month \n$today\u00a0=\u00a0date(\"H:i:s\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:16:17 \n$today\u00a0=\u00a0date(\"Y-m-d\u00a0H:i:s\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a02001-03-10\u00a017:16:18\u00a0\uff08MySQL\u00a0DATETIME\u00a0\u683c\u5f0f\uff09 \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u8981\u683c\u5f0f\u5316\u5176\u5b83\u8bed\u79cd\u7684\u65e5\u671f\uff0c\u5e94\u8be5\u7528 setlocale()<\/a><\/span> \u548c strftime()<\/a><\/span> \u51fd\u6570\u6765\u4ee3\u66ff date()<\/strong><\/span>\u3002<\/p>\n \u53c2\u89c1 getlastmod()<\/a><\/span>\uff0cgmdate()<\/a><\/span>\uff0cmktime()<\/a><\/span>\uff0cstrftime()<\/a><\/span> \u548c time()<\/a><\/span>\u3002<\/p>\n<\/div>\n \n\u53c2\u6570<\/h3>\n\nformat<\/code><\/dt>\n\n\u8f93\u51fa\u7684\u65e5\u671f string<\/a><\/span> \u683c\u5f0f\u3002 \u53c2\u89c1\u4e0b\u6587\u4e2d\u7684 \u683c\u5f0f\u5316\u9009\u9879\u3002 \u540c\u65f6\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u9884\u5b9a\u4e49\u65e5\u671f\u5e38\u91cf<\/a> \uff0c\u4f8b\u5982\uff1a\u5e38\u91cf DATE_RSS<\/code><\/strong> \u8868\u793a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32 ‘D, d M Y H:i:s’<\/em>\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nformat<\/code> \u53c2\u6570\u5b57\u7b26\u4e32\u4e2d\u53ef\u8bc6\u522b\u4e0b\u5217\u5b57\u7b26<\/strong><\/caption>\nformat<\/code>\u5b57\u7b26<\/th>\n \u63cf\u8ff0<\/th>\n \u8fd4\u56de\u503c\u793a\u4f8b<\/th>\n<\/tr>\n<\/thead>\n \u5929<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n d<\/em><\/td>\n \u4e00\u4e2a\u6708\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 01<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n D<\/em><\/td>\n 3 \u4e2a\u5b57\u7b26\u8868\u793a\u7684\u661f\u671f\u51e0<\/td>\n \u4ece Mon<\/em> \u5230 Sun<\/em><\/td>\n<\/tr>\n j<\/em><\/td>\n \u4e00\u4e2a\u6708\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u65e0\u524d\u5bfc 0<\/td>\n \u4ece 1<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n l<\/em>(lowercase ‘L’)<\/td>\n \u661f\u671f\u51e0\uff0c\u82f1\u6587\u5168\u79f0<\/td>\n \u4ece Sunday<\/em> \u5230Saturday<\/em><\/td>\n<\/tr>\n N<\/em><\/td>\n ISO-8601 \u89c4\u5b9a\u7684\u6570\u5b57\u8868\u793a\u7684\u661f\u671f\u51e0\uff08PHP 5.1.0 \u65b0\u52a0 \uff09<\/td>\n \u4ece 1<\/em> \uff08\u8868\u793a\u661f\u671f\u4e00\uff09\u5230 7<\/em> \uff08\u8868\u793a\u661f\u671f\u65e5\uff09<\/td>\n<\/tr>\n S<\/em><\/td>\n \u4e00\u4e2a\u6708\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u5e26\u6709 2 \u4e2a\u5b57\u7b26\u8868\u793a\u7684\u82f1\u8bed\u5e8f\u6570\u8bcd\u3002<\/td>\n st<\/em>\uff0c nd<\/em>\uff0c rd<\/em> \u6216\u8005th<\/em>\u3002 \u53ef\u4ee5\u548c j<\/em> \u8054\u5408\u4f7f\u7528\u3002<\/td>\n<\/tr>\n w<\/em><\/td>\n \u6570\u5b57\u8868\u793a\u7684\u661f\u671f\u51e0<\/td>\n \u4ece 0<\/em> \uff08\u661f\u671f\u65e5\uff09 \u5230 6<\/em> \uff08\u661f\u671f\u516d\uff09<\/td>\n<\/tr>\n z<\/em><\/td>\n \u4e00\u5e74\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u4ece 0 \u5f00\u59cb\u8ba1\u6570<\/td>\n \u4ece 0<\/em> \u5230 365<\/em><\/td>\n<\/tr>\n \u5468<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n W<\/em><\/td>\n ISO-8601 \u89c4\u8303\u7684\u4e00\u5e74\u4e2d\u7684\u7b2c\u51e0\u5468\uff0c\u5468\u4e00\u89c6\u4e3a\u4e00\u5468\u5f00\u59cb\u3002\uff08PHP 4.1.0 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a 42<\/em> \uff08\u672c\u5e74\u7b2c42\u5468\uff09<\/td>\n<\/tr>\n \u6708<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n F<\/em><\/td>\n \u6708\u4efd\u82f1\u6587\u5168\u62fc\uff0c\u4f8b\u5982\uff1aJanuary \u6216 March<\/td>\n \u4ece January<\/em> \u5230December<\/em><\/td>\n<\/tr>\n m<\/em><\/td>\n \u5e26\u6709 0 \u524d\u5bfc\u7684\u6570\u5b57\u8868\u793a\u7684\u6708\u4efd<\/td>\n \u4ece 01<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n M<\/em><\/td>\n 3 \u4e2a\u5b57\u7b26\u8868\u793a\u7684\u6708\u4efd\u7684\u82f1\u6587\u7b80\u62fc<\/td>\n \u4ece Jan<\/em> \u5230 Dec<\/em><\/td>\n<\/tr>\n n<\/em><\/td>\n \u6708\u4efd\u7684\u6570\u5b57\u8868\u793a\uff0c\u65e0\u524d\u5bfc 0<\/td>\n 1<\/em> through 12<\/em><\/td>\n<\/tr>\n t<\/em><\/td>\n \u7ed9\u5b9a\u6708\u4efd\u4e2d\u5305\u542b\u591a\u5c11\u5929<\/td>\n \u4ece 28<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n \u5e74<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n L<\/em><\/td>\n \u662f\u5426\u4e3a\u95f0\u5e74<\/td>\n \u5982\u679c\u662f\u95f0\u5e74\uff0c\u5219\u8fd4\u56de 1<\/em>\uff0c\u53cd\u4e4b\u8fd4\u56de0<\/em>\u3002<\/td>\n<\/tr>\n o<\/em><\/td>\n ISO-8601 \u89c4\u8303\u7684\u5e74\u4efd\uff0c\u540c Y<\/em> \u683c\u5f0f\u3002\u6709\u4e00\u79cd\u60c5\u51b5\u9664\u5916\uff1a\u5f53 ISO \u7684\u5468\u6570\uff08W<\/em>\uff09\u5c5e\u4e8e\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u65f6\uff0c\u4f1a\u8fd4\u56de\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u7684\u5e74\u4efd\u6570\u5b57\u8868\u8fbe\u3002 \u5c5e\u4e8e\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u65f6\uff0c\u4f1a\u8fd4\u56de\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u7684\u5e74\u4efd\u6570\u5b57\u8868\u8fbe\u3002 \uff08PHP 5.1.0 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a1999<\/em> \u62162003<\/em><\/td>\n<\/tr>\n Y<\/em><\/td>\n 4 \u4f4d\u6570\u5b57\u7684\u5e74\u4efd<\/td>\n \u793a\u4f8b\uff1a1999<\/em> \u62162003<\/em><\/td>\n<\/tr>\n y<\/em><\/td>\n 2 \u4f4d\u6570\u5b57\u7684\u5e74\u4efd<\/td>\n \u793a\u4f8b\uff1a 99<\/em> \u6216 03<\/em><\/td>\n<\/tr>\n \u65f6\u95f4<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n a<\/em><\/td>\n \u4e0a\u5348\u8fd8\u662f\u4e0b\u5348\uff0c2 \u4f4d\u5c0f\u5199\u5b57\u7b26<\/td>\n am<\/em> \u6216 pm<\/em><\/td>\n<\/tr>\n A<\/em><\/td>\n \u4e0a\u5348\u8fd8\u662f\u4e0b\u5348\uff0c2 \u4f4d\u5927\u5199\u5b57\u7b26<\/td>\n AM<\/em> \u6216 PM<\/em><\/td>\n<\/tr>\n B<\/em><\/td>\n \u65af\u6c83\u742a\u56e0\u7279\u7f51\u65f6\u95f4<\/td>\n \u4ece 000<\/em> \u5230 999<\/em><\/td>\n<\/tr>\n g<\/em><\/td>\n \u5c0f\u65f6\uff0c12\u65f6\u5236\uff0c\u65e0\u524d\u5bfc 0<\/td>\n \u4ece 1<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n G<\/em><\/td>\n \u5c0f\u65f6\uff0c24\u65f6\u5236\uff0c\u65e0\u524d\u5bfc 0<\/td>\n \u4ece 0<\/em> \u5230 23<\/em><\/td>\n<\/tr>\n h<\/em><\/td>\n \u5c0f\u65f6\uff0c12\u65f6\u5236\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 01<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n H<\/em><\/td>\n \u5c0f\u65f6\uff0c24\u65f6\u5236\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n 00<\/em> through 23<\/em><\/td>\n<\/tr>\n i<\/em><\/td>\n \u5206\u949f\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 00<\/em> \u5230 59<\/em><\/td>\n<\/tr>\n s<\/em><\/td>\n \u79d2\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 00<\/em> \u5230 59<\/em><\/td>\n<\/tr>\n u<\/em><\/td>\n \u6beb\u79d2 \uff08PHP 5.2.2 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a 654321<\/em><\/td>\n<\/tr>\n \u65f6\u533a<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n e<\/em><\/td>\n \u65f6\u533a\u6807\u8bc6\uff08PHP 5.1.0 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b: UTC<\/em>, GMT<\/em>,Atlantic\/Azores<\/em><\/td>\n<\/tr>\n I<\/em> \uff08\u5927\u5199\u5b57\u6bcd i\uff09<\/td>\n \u662f\u5426\u590f\u4ee4\u65f6<\/td>\n \u5982\u679c\u662f\u590f\u4ee4\u65f6\u5219\u8fd4\u56de 1<\/em>\uff0c\u53cd\u4e4b\u8fd4\u56de0<\/em>\u3002<\/td>\n<\/tr>\n O<\/em><\/td>\n \u548c\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\uff08GMT\uff09\u7684\u65f6\u5dee\uff0c\u4ee5\u5c0f\u65f6\u4e3a\u5355\u4f4d<\/td>\n \u793a\u4f8b\uff1a +0200<\/em><\/td>\n<\/tr>\n P<\/em><\/td>\n \u548c\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\uff08GMT\uff09\u7684\u65f6\u5dee\uff0c\u5305\u62ec\u5c0f\u65f6\u548c\u5206\u949f\uff0c\u5c0f\u65f6\u548c\u5206\u949f\u4e4b\u95f4\u4f7f\u7528\u5192\u53f7\uff08:\uff09\u5206\u9694\uff08PHP 5.1.3 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a +02:00<\/em><\/td>\n<\/tr>\n T<\/em><\/td>\n \u65f6\u533a\u7f29\u5199<\/td>\n \u793a\u4f8b\uff1aEST<\/em>, MDT<\/em>…<\/td>\n<\/tr>\n Z<\/em><\/td>\n \u4ee5\u79d2\u4e3a\u5355\u4f4d\u7684\u65f6\u533a\u504f\u79fb\u91cf\u3002UTC \u4ee5\u897f\u7684\u65f6\u533a\u8fd4\u56de\u8d1f\u6570\uff0cUTC \u4ee5\u4e1c\u7684\u65f6\u533a\u8fd4\u56de\u6b63\u6570\u3002<\/td>\n \u4ece -43200<\/em> \u523050400<\/em><\/td>\n<\/tr>\n \u5b8c\u6574\u7684\u65e5\u671f\/\u65f6\u95f4<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n c<\/em><\/td>\n ISO 8601 \u65e5\u671f\u53ca\u65f6\u95f4\uff08PHP 5 \u65b0\u52a0\uff09<\/td>\n 2004-02-12T15:19:21+00:00<\/td>\n<\/tr>\n r<\/em><\/td>\n \u00bb\u00a0RFC 2822<\/a> \u683c\u5f0f\u7684\u65e5\u671f\u548c\u65f6\u95f4<\/td>\n \u793a\u4f8b\uff1aThu, 21 Dec 2000 16:01:07 +0200<\/em><\/td>\n<\/tr>\n U<\/em><\/td>\n \u81ea 1970 \u5e74 1 \u6708 1 \u65e5 0 \u65f6 0 \u5206 0 \u79d2\uff08GMT \u65f6\u95f4\uff09\u4ee5\u6765\u7684\u65f6\u95f4\uff0c\u4ee5\u79d2\u4e3a\u5355\u4f4d<\/td>\n \u53c2\u89c1time()<\/a><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u4e2d\u7684\u4e0d\u53ef\u8bc6\u522b\u5b57\u7b26\u5c06\u539f\u6837\u8f93\u51fa\u3002 \u5f53\u4f7f\u7528 gmdate()<\/a><\/span> \u51fd\u6570\u65f6\uff0cZ<\/em> \u683c\u5f0f\u6c38\u8fdc\u8fd4\u56de 0<\/em>\u3002<\/p>\n Note<\/strong>:<\/p>\n \u7531\u4e8e\u672c\u51fd\u6570\u4ec5\u63a5\u53d7 integer<\/a><\/span> \u7c7b\u578b\u7684\u65f6\u95f4\u6233\u53c2\u6570\uff0c\u6240\u4ee5 u<\/em> \u683c\u5f0f\u4ec5\u5728\u4f7f\u7528date_format()<\/a><\/span> \u51fd\u6570\u5e76\u4e14\u4f7f\u7528 date_create()<\/a><\/span> \u51fd\u6570\u521b\u5efa\u65f6\u95f4\u6233\u65f6\u624d\u662f\u6709\u7528\u7684\u3002<\/p>\n<\/blockquote>\n<\/dd>\n timestamp<\/code><\/dt>\n \n\u53ef\u9009\u7684 timestamp<\/code> \u53c2\u6570\u662f\u4e00\u4e2a integer<\/a><\/span> \u7684 Unix \u65f6\u95f4\u6233\uff0c\u5982\u672a\u6307\u5b9a\uff0c\u53c2\u6570\u503c\u9ed8\u8ba4\u4e3a\u5f53\u524d\u672c\u5730\u65f6\u95f4\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5176\u503c\u9ed8\u8ba4\u4e3a time()<\/a><\/span> \u7684\u8fd4\u56de\u503c\u3002<\/p>\n<\/dd>\n<\/dl>\n<\/div>\n \n\u8fd4\u56de\u503c<\/h3>\n\u8fd4\u56de\u683c\u5f0f\u5316\u540e\u7684\u65e5\u671f\u65f6\u95f4\u7684\u5b57\u7b26\u4e32\u8868\u8fbe\u3002 \u5982\u679c timestamp<\/code> \u53c2\u6570\u4e0d\u662f\u4e00\u4e2a\u6709\u6548\u6570\u503c\uff0c\u5219\u8fd4\u56de FALSE<\/code><\/strong> \u5e76\u5f15\u53d1 E_WARNING<\/code><\/strong> \u7ea7\u522b\u7684\u9519\u8bef\u3002<\/p>\n<\/div>\n\n\u9519\u8bef\uff0f\u5f02\u5e38<\/h3>\n\u5728\u6bcf \u6b21\u8c03\u7528\u65e5\u671f\/\u65f6\u95f4\u51fd\u6570\u65f6\uff0c\u5982\u679c\u65f6\u533a\u65e0\u6548\u5219\u4f1a\u5f15\u53d1 E_NOTICE<\/code><\/strong> \u9519\u8bef\uff0c\u5982\u679c\u4f7f\u7528\u7cfb\u7edf\u8bbe\u5b9a\u503c\u6216 TZ<\/var> \u73af\u5883\u53d8\u91cf\uff0c\u5219\u4f1a\u5f15\u53d1 E_STRICT<\/code><\/strong> \u6216 E_WARNING<\/code><\/strong> \u6d88\u606f\u3002\u53c2\u89c1date_default_timezone_set()<\/a><\/span>\u3002<\/p>\n<\/div>\n \n\u66f4\u65b0\u65e5\u5fd7<\/h3>\n\n\n\n\n\n\n\n\u7248\u672c<\/th>\n \u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n 5.1.0<\/td>\n \u65f6\u95f4\u6233\u7684\u6709\u6548\u53d6\u503c\u8303\u56f4\u4e3a GMT \u65f6\u95f4\u7684 1901 \u5e74 12 \u6708 13 \u65e5\u81f3 GMT \u65f6\u95f4\u7684 2038 \u5e74 1 \u6708 19 \u65e5\u3002 \uff0832 \u4f4d\u6709\u7b26\u53f7\u6574\u6570\u7684\u53d6\u503c\u8303\u56f4\uff09\u3002 \u4f46\u662f\uff0c\u5728 PHP 5.1.0 \u4e4b\u524d\u7684\u7248\u672c\uff0c\u5728\u67d0\u4e9b\u7cfb\u7edf\uff08\u4f8b\u5982 Windows\uff09\u4e0a\u6709\u6548\u53d6\u503c\u8303\u56f4\u4e3a 1970 \u5e74 1 \u6708 1 \u65e5\u81f3 2038 \u5e74 1 \u6708 19 \u65e5\u3002<\/td>\n<\/tr>\n 5.1.0<\/td>\n \n\u73b0\u5728\u53d1\u5e03 E_STRICT<\/code><\/strong> \u548c E_NOTICE<\/code><\/strong> \u65f6\u533a\u9519\u8bef\u3002<\/p>\n<\/td>\n<\/tr>\n 5.1.1<\/td>\n format<\/code> \u53c2\u6570\u6807\u51c6\u7684\u53ef\u7528\u65e5\u671f\/\u65f6\u95f4\u683c\u5f0f\u5e38\u91cf\u89c1\uff1a \u5e38\u91cf<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n\u8303\u4f8b<\/h3>\n\nExample #5 date()<\/span> \u51fd\u6570\u793a\u4f8b<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u8bbe\u7f6e\u9ed8\u8ba4\u65f6\u533a\u3002PHP\u00a05.1\u00a0\u4e4b\u540e\u7248\u672c\u53ef\u7528 \ndate_default_timezone_set('UTC');<\/p>\n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a\u00a0Monday \necho\u00a0date(\"l\");<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aMonday\u00a08th\u00a0of\u00a0August\u00a02005\u00a003:12:46\u00a0PM \necho\u00a0date('l\u00a0jS\u00a0\\of\u00a0F\u00a0Y\u00a0h:i:s\u00a0A');<\/p>\n \/\/\u00a0\u8f93\u51fa\uff1aJuly\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0Saturday \necho\u00a0\"July\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0\"\u00a0.\u00a0date(\"l\",\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000));<\/p>\n \/\u00a0\u4f7f\u7528\u683c\u5f0f\u5e38\u91cf\u00a0\/ \n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a\u00a0Mon,\u00a015\u00a0Aug\u00a02005\u00a015:12:46\u00a0UTC \necho\u00a0date(DATE_RFC822);<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a2000-07-01T00:00:00+00:00 \necho\u00a0date(DATE_ATOM,\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000)); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n \u53ef\u4ee5\u4f7f\u7528\u53cd\u659c\u7ebf\u8fdb\u884c\u8f6c\u4e49\u6765\u963b\u6b62\u51fd\u6570\u89e3\u6790\u683c\u5f0f\u5b57\u7b26\u4e32\u4e2d\u7684\u53ef\u8bc6\u522b\u5b57\u7b26\u3002 \u5982\u679c\u53cd\u659c\u7ebf\u548c\u8981\u8f6c\u4e49\u7684\u5b57\u7b26\u8fde\u5728\u4e00\u8d77\u4f9d\u7136\u662f\u4e00\u4e2a\u6709\u6548\u7684\u5b57\u7b26\u5e8f\u5217\uff0c\u90a3\u4e48\u9700\u8981\u5bf9 \u53cd\u659c\u7ebf\u518d\u6b21\u8fdb\u884c\u8f6c\u4e49\u3002<\/p>\n\nExample #6 \u5bf9 date()<\/span> \u51fd\u6570\u4e2d\u7684\u683c\u5f0f\u5b57\u7b26\u4e32\u8fdb\u884c\u8f6c\u4e49<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a\u00a0Wednesday\u00a0the\u00a015th \necho\u00a0date('l\u00a0\\t\\h\\e\u00a0jS'); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u53ef\u4ee5\u8054\u5408\u4f7f\u7528 date()<\/strong><\/span> \u548c mktime()<\/a><\/span> \u51fd\u6570 \u6765\u6784\u9020\u4e4b\u524d\u6216\u8005\u4e4b\u540e\u7684\u65e5\u671f\u65f6\u95f4\u3002<\/p>\n \nExample #7 date()<\/span> \u548c mktime()<\/a><\/span> \u8054\u5408\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n \n<?php \n$tomorrow\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")\u00a0\u00a0,\u00a0date(\"d\")+1,\u00a0date(\"Y\")); \n$lastmonth\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")-1,\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")); \n$nextyear\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\"),\u00a0\u00a0\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")+1); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\nNote<\/strong>:<\/p>\n \u7531\u4e8e\u5b58\u5728\u590f\u4ee4\u65f6\u65f6\u95f4\uff0c \u6240\u4ee5\u6b64\u65b9\u6848\u76f8\u5bf9\u4e8e\u76f4\u63a5\u5728\u65f6\u95f4\u6233\u4e0a\u52a0\/\u51cf\u79d2\u6570 \u8981\u66f4\u52a0\u53ef\u9760\u3002<\/p>\n<\/blockquote>\n date()<\/strong><\/span> \u51fd\u6570\u683c\u5f0f\u5316\u7684\u4e00\u4e9b\u793a\u4f8b\u3002 \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5373\u4f7f\u662f\u5bf9\u4e8e\u5f53\u524d\u6765\u8bf4\u5e76\u4e0d\u5177\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\uff0c \u4e5f\u8981\u50cf\u5bf9\u5f85\u5177\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\u90a3\u6837\u8fdb\u884c\u8f6c\u4e49\uff0c\u4ee5\u907f\u514d\u51fd\u6570\u8fd4\u56de\u975e\u9884\u671f\u7684\u503c\u3002 \u56e0\u4e3a\u53ef\u80fd\u5728\u5c06\u6765\u7684 PHP \u7248\u672c\u4e2d\uff0c\u8fd9\u4e9b\u5b57\u7b26\u4f1a\u88ab\u8d4b\u4e88\u7279\u6b8a\u7684\u542b\u4e49\u3002 \u8fdb\u884c\u8f6c\u4e49\u7684\u65f6\u5019\uff0c\u8bf7\u786e\u4fdd\u4f7f\u7528\u5355\u5f15\u53f7\uff0c\u4ee5\u907f\u514d \\n \u88ab\u89e3\u91ca\u4e3a\u6362\u884c\u7b26\u53f7\u3002<\/p>\n\nExample #8 date()<\/span> \u51fd\u6570\u683c\u5f0f\u5316<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u5047\u8bbe\u4eca\u5929\u662f\u00a02001\u00a0\u5e74\u00a03\u00a0\u6708\u00a010\u00a0\u65e5\u4e0b\u5348\u00a05\u00a0\u70b9\u00a016\u00a0\u5206\u00a018\u00a0\u79d2\uff0c \n\/\/\u00a0\u5e76\u4e14\u4f4d\u4e8e\u5c71\u533a\u6807\u51c6\u65f6\u95f4\uff08MST\uff09\u65f6\u533a<\/p>\n$today\u00a0=\u00a0date(\"F\u00a0j,\u00a0Y,\u00a0g:i\u00a0a\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0March\u00a010,\u00a02001,\u00a05:16\u00a0pm \n$today\u00a0=\u00a0date(\"m.d.y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a003.10.01 \n$today\u00a0=\u00a0date(\"j,\u00a0n,\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a010,\u00a03,\u00a02001 \n$today\u00a0=\u00a0date(\"Ymd\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a020010310 \n$today\u00a0=\u00a0date('h-i-s,\u00a0j-m-y,\u00a0it\u00a0is\u00a0w\u00a0Day');\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a005-16-18,\u00a010-03-01,\u00a01631\u00a01618\u00a06\u00a0Satpm01 \n$today\u00a0=\u00a0date('\\i\\t\u00a0\\i\\s\u00a0\\t\\h\\e\u00a0jS\u00a0\\d\\a\\y.');\u00a0\u00a0\u00a0\/\/\u00a0it\u00a0is\u00a0the\u00a010th\u00a0day. \n$today\u00a0=\u00a0date(\"D\u00a0M\u00a0j\u00a0G:i:s\u00a0T\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0Sat\u00a0Mar\u00a010\u00a017:16:18\u00a0MST\u00a02001 \n$today\u00a0=\u00a0date('H:m:s\u00a0\\m\u00a0\\i\\s\\\u00a0\\m\\o\\n\\t\\h');\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:03:18\u00a0m\u00a0is\u00a0month \n$today\u00a0=\u00a0date(\"H:i:s\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:16:18 \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u5982\u679c\u9700\u8981\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u5316\u4e3a\u5176\u4ed6\u8bed\u8a00\uff0c\u4f60\u5e94\u8be5\u4f7f\u7528 setlocale()<\/a><\/span> \u548c strftime()<\/a><\/span> \u51fd\u6570 \u6765\u66ff\u4ee3 date()<\/strong><\/span> \u51fd\u6570\u3002<\/p>\n<\/div>\n \n\u6ce8\u91ca<\/h3>\nNote<\/strong>:<\/p>\n\u4f7f\u7528 strtotime()<\/a><\/span> \u51fd\u6570\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8868\u8fbe\u7684\u65e5\u671f\u65f6\u95f4\u8f6c\u6362\u4e3a\u65f6\u95f4\u6233\u3002 \u53e6\u5916\uff0c\u4e00\u4e9b\u6570\u636e\u5e93\u4ea7\u54c1\u4e5f\u63d0\u4f9b\u4e86\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u65f6\u95f4\u6233\u7684\u51fd\u6570\u3002 \uff08\u4f8b\u5982 MySQL \u4e2d\u7684 \u00bb\u00a0UNIX_TIMESTAMP<\/a> \u51fd\u6570\uff09\u3002<\/p>\n<\/blockquote>\n Tip<\/strong><\/p>\n\u4ece PHP 5.1 \u7248\u672c\u5f00\u59cb\uff0c\u8bf7\u6c42\u7684\u5f00\u59cb\u65f6\u95f4\u53ef\u4ee5\u4ece\u53d8\u91cf$_SERVER[‘REQUEST_TIME’]<\/a><\/var> \u4e2d\u83b7\u53d6\u3002<\/p>\n<\/div>\n<\/div>\n \n\u53c2\u89c1<\/h3>\n\ngmdate()<\/a> – \u683c\u5f0f\u5316\u4e00\u4e2a GMT\/UTC \u65e5\u671f\uff0f\u65f6\u95f4<\/span><\/li>\n idate()<\/a> – \u5c06\u672c\u5730\u65f6\u95f4\u65e5\u671f\u683c\u5f0f\u5316\u4e3a\u6574\u6570<\/span><\/li>\n getdate()<\/a> – \u53d6\u5f97\u65e5\u671f\uff0f\u65f6\u95f4\u4fe1\u606f<\/span><\/li>\n getlastmod()<\/a> – \u83b7\u53d6\u9875\u9762\u6700\u540e\u4fee\u6539\u7684\u65f6\u95f4<\/span><\/li>\n mktime()<\/a> – \u53d6\u5f97\u4e00\u4e2a\u65e5\u671f\u7684 Unix \u65f6\u95f4\u6233<\/span><\/li>\n strftime()<\/a> – \u6839\u636e\u533a\u57df\u8bbe\u7f6e\u683c\u5f0f\u5316\u672c\u5730\u65f6\u95f4\uff0f\u65e5\u671f<\/span><\/li>\n time()<\/a> – \u8fd4\u56de\u5f53\u524d\u7684 Unix \u65f6\u95f4\u6233<\/span><\/li>\n strtotime()<\/a> – \u5c06\u4efb\u4f55\u82f1\u6587\u6587\u672c\u7684\u65e5\u671f\u65f6\u95f4\u63cf\u8ff0\u89e3\u6790\u4e3a Unix \u65f6\u95f4\u6233<\/span><\/li>\n \u9884\u5b9a\u4e49\u7684\u65e5\u671f\u65f6\u95f4\u5e38\u91cf<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n add a note<\/small><\/a><\/span><\/p>\nUser Contributed Notes 43 notes<\/span><\/h3>\n<\/div>\n\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n77<\/div>\n<\/div>\nJimmy<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nThings to be aware of when using week numbers with years.<\/p>\n<?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-07\"<\/span>)); <\/span>\/\/ gives 201101 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-12-31\"<\/span>)); <\/span>\/\/ gives 201152 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-01\"<\/span>)); <\/span>\/\/ gives 201152 too \n<\/span>?> \n<\/span> \nBUT<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"oW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-07\"<\/span>)); <\/span>\/\/ gives 201101 \n<\/span>echo <\/span>date<\/span>(<\/span>\"oW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-12-31\"<\/span>)); <\/span>\/\/ gives 201152 \n<\/span>echo <\/span>date<\/span>(<\/span>\"oW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-01\"<\/span>)); <\/span>\/\/ gives 201052 (Year is different than previous example) \n<\/span>?> \n<\/span> \nReason: \nY is year from the date \no is ISO-8601 year number \nW is ISO-8601 week number of year<\/p>\n Conclusion: \nif using 'W' for the week number use 'o' for the year.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n9<\/div>\n<\/div>\nivijan dot stefan at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 months ago<\/strong><\/div>\n\nIf you have a problem with the different time zone, this is the solution for that. \n<?php \n<\/span>\/\/ first line of PHP \n<\/span>$defaultTimeZone<\/span>=<\/span>'UTC'<\/span>; \nif(<\/span>date_default_timezone_get<\/span>()!=<\/span>$defaultTimeZone<\/span>))<\/span>date_default_timezone_set<\/span>(<\/span>$defaultTimeZone<\/span>);<\/p>\n<\/span>\/\/ somewhere in the code \n<\/span>function <\/span>_date<\/span>(<\/span>$format<\/span>=<\/span>\"r\"<\/span>, <\/span>$timestamp<\/span>=<\/span>false<\/span>, <\/span>$timezone<\/span>=<\/span>false<\/span>) \n{ \n<\/span>$userTimezone <\/span>= new <\/span>DateTimeZone<\/span>(!empty(<\/span>$timezone<\/span>) ? <\/span>$timezone<\/span>: <\/span>'GMT'<\/span>); \n<\/span>$gmtTimezone <\/span>= new <\/span>DateTimeZone<\/span>(<\/span>'GMT'<\/span>); \n<\/span>$myDateTime <\/span>= new <\/span>DateTime<\/span>((<\/span>$timestamp<\/span>!=<\/span>false<\/span>?<\/span>date<\/span>(<\/span>\"r\"<\/span>,(int)<\/span>$timestamp<\/span>):<\/span>date<\/span>(<\/span>\"r\"<\/span>)), <\/span>$gmtTimezone<\/span>); \n<\/span>$offset <\/span>= <\/span>$userTimezone<\/span>-><\/span>getOffset<\/span>(<\/span>$myDateTime<\/span>); \nreturn <\/span>date<\/span>(<\/span>$format<\/span>, (<\/span>$timestamp<\/span>!=<\/span>false<\/span>?(int)<\/span>$timestamp<\/span>:<\/span>$myDateTime<\/span>-><\/span>format<\/span>(<\/span>'U'<\/span>)) + <\/span>$offset<\/span>); \n}<\/p>\n <\/span>\/* Example \/ \n<\/span>echo <\/span>'System Date\/Time: '<\/span>.<\/span>date<\/span>(<\/span>\"Y-m-d \| h:i:sa\"<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>'New York Date\/Time: '<\/span>.<\/span>_date<\/span>(<\/span>\"Y-m-d \| h:i:sa\"<\/span>, <\/span>false<\/span>,<\/span>'America\/New_York'<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>'Belgrade Date\/Time: '<\/span>.<\/span>_date<\/span>(<\/span>\"Y-m-d \| h:i:sa\"<\/span>, <\/span>false<\/span>,<\/span>'Europe\/Belgrade'<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>'Belgrade Date\/Time: '<\/span>.<\/span>_date<\/span>(<\/span>\"Y-m-d \| h:i:sa\"<\/span>, <\/span>514640700<\/span>,<\/span>'Europe\/Belgrade'<\/span>).<\/span>'<br>'<\/span>; \n<\/span>?> \n<\/span>This is the best and fastest solution for this problem. Working almost identical to date() function only as a supplement has the time zone option.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n11<\/div>\n<\/div>\nadityabhai at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nFor Microseconds, we can get by following:<\/p>\necho date('Ymd His'.substr((string)microtime(), 1, 8).' e');<\/p>\n Thought, it might be useful to someone !<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n10<\/div>\n<\/div>\nbakerj417 at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nIf you are having an issue getting u to work so is everyone else. The solution that I am using which I found on another site(so not taking credit) is to use this:<\/p>\ndate(\"Y\/m\/d H:i:s\"). substr((string)microtime(), 1, 6);<\/p>\n that will give you:<\/p>\n yyyy\/mm\/dd hh:ii:ss.uuuuuu<\/p>\n hope this helps someone in need!<\/p>\n thanks all<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n7<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nIt's common for us to overthink the complexity of date\/time calculations and underthink the power and flexibility of PHP's built-in functions.\u00a0 Considerhttp:\/\/php.net\/manual\/en\/function.date.php#108613<\/a><\/p>\n<?php \n<\/span>function <\/span>get_time_string<\/span>(<\/span>$seconds<\/span>) \n{ \nreturn <\/span>date<\/span>(<\/span>'H:i:s'<\/span>, <\/span>strtotime<\/span>(<\/span>\"2000-01-01 + <\/span>$seconds<\/span>SECONDS\"<\/span>)); \n}<\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n8<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 6 years ago<\/strong><\/div>\n\nCorrect format for a MySQL DATETIME column is \n<?php $mysqltime <\/span>= <\/span>date <\/span>(<\/span>\"Y-m-d H:i:s\"<\/span>, <\/span>$phptime<\/span>); <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n8<\/div>\n<\/div>\nFiraSEO<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nthis how you make an HTML5 <time> tag correctly<\/p>\n<?php<\/p>\n <\/span>echo <\/span>'<time datetime=\"'<\/span>.<\/span>date<\/span>(<\/span>'c'<\/span>).<\/span>'\">'<\/span>.<\/span>date<\/span>(<\/span>'Y - m - d'<\/span>).<\/span>'<\/time>'<\/span>;<\/p>\n <\/span>?> \n<\/span> \nin the \"datetime\" attribute you should put a machine-readable value which represent time , the best value is a full time\/date with ISO 8601 ( date('c') ) ,,, the attr will be hidden from users<\/p>\n and it doesn't really matter what you put as a shown value to the user,, any date\/time format is okay !<\/p>\n This is very good for SEO especially search engines like Google .<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n2<\/div>\n<\/div>\njock<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 11 months ago<\/strong><\/div>\n\nAs of PHP 5.3.3, date('c') will produce a string like this:<\/p>\n2014-06-17T16:22:42+02:00<\/p>\n Instead date (DATE_ISO8601) will produce:<\/p>\n 2014-06-17T16:23:36+0200<\/p>\n which lacks the semicolon in the timezone part. Both are ISO8601 compliant anyway, but I found that the latter has better compatibility with other languages like python.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n4<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nTo quickly convert date(\"N\") to a 0 based index with Sunday being represented as 0, you can run it against modulus 7:<\/p>\n<?php \n$first_of_month_index <\/span>= <\/span>date<\/span>(<\/span>'N'<\/span>, <\/span>strtotime<\/span>(<\/span>'4\/1\/1990'<\/span>)) % <\/span>7<\/span>; \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nTim Connolly<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nHere's my solution for looking up the month number by name (used when parsing an 'ls'):<\/p>\n<?php \n<\/span>for(<\/span>$m<\/span>=<\/span>1<\/span>;<\/span>$m<\/span><=<\/span>12<\/span>;<\/span>$m<\/span>++){ \n<\/span>$month<\/span>=<\/span>date<\/span>(<\/span>\"M\"<\/span>,<\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>$m<\/span>,<\/span>1<\/span>,<\/span>2000<\/span>)); \n<\/span>$mon<\/span>[<\/span>\"<\/span>$month<\/span>\"<\/span>]=<\/span>$m<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nLeopietroni<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nThis function will add working day to a given timestamp<\/p>\n<?php \n<\/span>function <\/span>addworkinday<\/span>(<\/span>$timestamp<\/span>,<\/span>$daystoadd<\/span>){<\/p>\n <\/span>$dayoftheweek <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>,<\/span>$timestamp<\/span>); \n<\/span>$sum <\/span>=<\/span>$dayoftheweek <\/span>+<\/span>$daystoadd<\/span>;<\/p>\n while (<\/span>$sum <\/span>>= <\/span>6<\/span>) {<\/p>\n <\/span>$daystoadd<\/span>=<\/span>$daystoadd<\/span>+<\/span>1<\/span>; \n<\/span>$sum<\/span>=<\/span>$sum<\/span>-<\/span>1<\/span>; \n} \nreturn <\/span>$timestamp <\/span>+(<\/span>60<\/span><\/span>60<\/span><\/span>24<\/span><\/span>$daystoadd<\/span>);<\/p>\n } \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nwebmaster1989 at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nSometimes it is very useful to convert a sql timestamp to an also called NTP time. This is often used as time date notation in XML RSS pages. To convert a timestamp to this NTP notation try the following:<\/p>\n<?php \n<\/span>echo <\/span>date<\/span>(<\/span>'D, d M Y h:i:s O'<\/span>, <\/span>strtotime <\/span>(<\/span>$timestamp<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nnathan<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\n<?php \n<\/span>\/* the following variables are set to appropriate \ncharacters recognized by php version 5 that \nwill get the date. To display the date, we have \nto use 'echo' or 'print' to send the variable \ndata to the browser \n\/<\/p>\n<\/span>$day<\/span>=<\/span>date<\/span>(<\/span>\"l\"<\/span>); \n<\/span>$date<\/span>=<\/span>date<\/span>(<\/span>\"j\"<\/span>); \n<\/span>$suffix<\/span>=<\/span>date<\/span>(<\/span>\"S\"<\/span>); \n<\/span>$month<\/span>=<\/span>date<\/span>(<\/span>\"F\"<\/span>); \n<\/span>$year<\/span>=<\/span>date<\/span>(<\/span>\"Y\"<\/span>); \necho <\/span>$day <\/span>. <\/span>\", \" <\/span>. <\/span>$month <\/span>. <\/span>\" \" <\/span>. <\/span>$date <\/span>. <\/span>$suffix <\/span>. <\/span>\", \" <\/span>. <\/span>$year<\/span>; \n<\/span>?> \n<\/span> \nrudimentary, simple way to due things, but it gets the job done for someone learning more on the subject.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n3<\/div>\n<\/div>\nBas Vijfwinkel<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nNote that some formatting options are different from MySQL. \nFor example using a 24 hour notation without leading zeros is the option '%G' in PHP but '%k' in MySQL. \nWhen using dynamically generated date formatting string, be careful to generate the correct options for either PHP or MySQL.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\ndavid dot leon at gmx dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\n<?php \n<\/span>\/\/date returns microseconds. \n<\/span>function <\/span>mdate<\/span>(<\/span>$format<\/span>, <\/span>$microtime <\/span>= <\/span>null<\/span>) { \n<\/span>$microtime <\/span>= <\/span>explode<\/span>(<\/span>' '<\/span>, (<\/span>$microtime <\/span>? <\/span>$microtime <\/span>:<\/span>microtime<\/span>())); \nif (<\/span>count<\/span>(<\/span>$microtime<\/span>) != <\/span>2<\/span>) return <\/span>false<\/span>; \n<\/span>$microtime<\/span>[<\/span>0<\/span>] = <\/span>$microtime<\/span>[<\/span>0<\/span>] <\/span>1000000<\/span>; \n<\/span>$format <\/span>= <\/span>str_replace<\/span>(<\/span>'u'<\/span>, <\/span>$microtime<\/span>[<\/span>0<\/span>], <\/span>$format<\/span>); \nreturn <\/span>date<\/span>(<\/span>$format<\/span>, <\/span>$microtime<\/span>[<\/span>1<\/span>]); \n} \n<\/span>?> \n<\/span> \necho mdate('Y-m-d H:i:s.u');<\/p>\n2014-05-19 12:41:59.202303<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n3<\/div>\n<\/div>\neduardo at digmotor dot com dot br<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 6 years ago<\/strong><\/div>\n\nThanks to tcasparr at gmail dot com for the great idea (at least for me) ;) \nI changed the code a little to replicate the functionality of date_parse_from_format, once I don't have PHP 5.3.0 yet. This might be useful for someone. Hope you don't mind changing your code tcasparr at gmail dot com.<\/p>\n<?php \n<\/span>\/******************************************************* \n* Simple function to take in a date format and return array of associated \n* formats for each date element \n* \n* @return array \n* @param string $strFormat \n* \n* Example: Y\/m\/d g:i:s becomes \n* Array \n* ( \n\u00a0 \u00a0\u00a0 [year] => Y \n\u00a0 \u00a0\u00a0 [month] => m \n\u00a0 \u00a0\u00a0 [day] => d \n\u00a0 \u00a0\u00a0 [hour] => g \n\u00a0 \u00a0\u00a0 [minute] => i \n\u00a0 \u00a0\u00a0 [second] => s \n* ) \n* \n\u00a0 This function is needed for\u00a0 PHP < 5.3.0 \n******************************************************\/ \n<\/span>function <\/span>dateParseFromFormat<\/span>(<\/span>$stFormat<\/span>, <\/span>$stData<\/span>) \n{ \n<\/span>$aDataRet <\/span>= array(); \n<\/span>$aPieces <\/span>= <\/span>split<\/span>(<\/span>'[:\/.\\ \\-]'<\/span>, <\/span>$stFormat<\/span>); \n<\/span>$aDatePart <\/span>= <\/span>split<\/span>(<\/span>'[:\/.\\ \\-]'<\/span>, <\/span>$stData<\/span>); \nforeach(<\/span>$aPieces <\/span>as <\/span>$key<\/span>=><\/span>$chPiece<\/span>) \n{ \nswitch (<\/span>$chPiece<\/span>) \n{ \ncase <\/span>'d'<\/span>: \ncase <\/span>'j'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'day'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'F'<\/span>: \ncase <\/span>'M'<\/span>: \ncase <\/span>'m'<\/span>: \ncase <\/span>'n'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'month'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'o'<\/span>: \ncase <\/span>'Y'<\/span>: \ncase <\/span>'y'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'year'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'g'<\/span>: \ncase <\/span>'G'<\/span>: \ncase <\/span>'h'<\/span>: \ncase <\/span>'H'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'hour'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'i'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'minute'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'s'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'second'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak; \n}<\/p>\n } \nreturn <\/span>$aDataRet<\/span>; \n} \n<\/span>?> \n<\/span> \nAlso, if you need to change the format of dates:<\/p>\n <?php \n<\/span>function <\/span>changeDateFormat<\/span>(<\/span>$stDate<\/span>,<\/span>$stFormatFrom<\/span>,<\/span>$stFormatTo<\/span>) \n{ \n<\/span>\/\/ When PHP 5.3.0 becomes available to me \n\/\/$date = date_parse_from_format($stFormatFrom,$stDate); \n\/\/For now I use the function above \n<\/span>$date <\/span>= <\/span>dateParseFromFormat<\/span>(<\/span>$stFormatFrom<\/span>,<\/span>$stDate<\/span>); \nreturn <\/span>date<\/span>(<\/span>$stFormatTo<\/span>,<\/span>mktime<\/span>(<\/span>$date<\/span>[<\/span>'hour'<\/span>], \n<\/span>$date<\/span>[<\/span>'minute'<\/span>], \n<\/span>$date<\/span>[<\/span>'second'<\/span>], \n<\/span>$date<\/span>[<\/span>'month'<\/span>], \n<\/span>$date<\/span>[<\/span>'day'<\/span>], \n<\/span>$date<\/span>[<\/span>'year'<\/span>])); \n}<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nmel dot boyce at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 9 years ago<\/strong><\/div>\n\nI've been flicking through the comments looking for some succinct date code and have noticed an alarming number of questions and over-burdened examples related to date mathematics. One of the most useful skills you can utilize when performing date math is taking full advantage of the UNIX timestamp. The UNIX timestamp was built for this kind of work.<\/p>\nAn example of this relates to a comment made by james at bandit-dot-co-dot-en-zed. James was looking for a way to calculate the number of days which have passed since a certain date. Rather than using mktime() and a loop, James can subtract the current timestamp from the timestamp of the date in question and divide that by the number of seconds in a day: \n<?php \n$days <\/span>= <\/span>floor<\/span>((<\/span>time<\/span>() - <\/span>strtotime<\/span>(<\/span>\"01-Jan-2006\"<\/span>))\/<\/span>86400<\/span>); \nprint(<\/span>\"<\/span>$days<\/span> days have passed.\\n\"<\/span>); \n<\/span>?> \n<\/span> \nAnother usage could find itself in a class submitted by Kyle M Hall which aids in the creation of timestamps from the recent past for use with MySQL. Rather than the looping and fine tuning of a date, Kyle can use the raw UNIX timestamps (this is untested code): \n<?php \n$ago <\/span>= <\/span>14<\/span>; <\/span>\/\/ days \n<\/span>$timestamp <\/span>= <\/span>time<\/span>() - (<\/span>$ago <\/span> <\/span>86400<\/span>); \n<\/span>?> \n<\/span> \nHopefully these two examples of \"UNIX-style\" timestamp usage will help those finding date mathematics more elusive than it should be.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nSpikeDaCruz<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 9 years ago<\/strong><\/div>\n\nThe following function will return the date (on the Gregorian calendar) for Orthodox Easter (Pascha).\u00a0 Note that incorrect results will be returned for years less than 1601 or greater than 2399. This is because the Julian calendar (from which the Easter date is calculated) deviates from the Gregorian by one day for each century-year that is NOT a leap-year, i.e. the century is divisible by 4 but not by 10.\u00a0 (In the old Julian reckoning, EVERY 4th year was a leap-year.)<\/p>\nThis algorithm was first proposed by the mathematician\/physicist Gauss.\u00a0 Its complexity derives from the fact that the calculation is based on a combination of solar and lunar calendars.<\/p>\n <?php \n<\/span>function <\/span>getOrthodoxEaster<\/span>(<\/span>$date<\/span>){ \n<\/span>\/* \nTakes any Gregorian date and returns the Gregorian \ndate of Orthodox Easter for that year. \n\/ \n<\/span>$year <\/span>= <\/span>date<\/span>(<\/span>\"Y\"<\/span>, <\/span>$date<\/span>); \n<\/span>$r1 <\/span>= <\/span>$year <\/span>% <\/span>19<\/span>; \n<\/span>$r2 <\/span>= <\/span>$year <\/span>% <\/span>4<\/span>; \n<\/span>$r3 <\/span>= <\/span>$year <\/span>% <\/span>7<\/span>; \n<\/span>$ra <\/span>= <\/span>19 <\/span> <\/span>$r1 <\/span>+ <\/span>16<\/span>; \n<\/span>$r4 <\/span>= <\/span>$ra <\/span>% <\/span>30<\/span>; \n<\/span>$rb <\/span>= <\/span>2 <\/span>* <\/span>$r2 <\/span>+ <\/span>4 <\/span>* <\/span>$r3 <\/span>+ <\/span>6 <\/span>* <\/span>$r4<\/span>; \n<\/span>$r5 <\/span>= <\/span>$rb <\/span>% <\/span>7<\/span>; \n<\/span>$rc <\/span>= <\/span>$r4 <\/span>+ <\/span>$r5<\/span>; \n<\/span>\/\/Orthodox Easter for this year will fall $rc days after April 3 \n<\/span>return <\/span>strtotime<\/span>(<\/span>\"3 April <\/span>$year<\/span> + <\/span>$rc<\/span> days\"<\/span>); \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n4<\/div>\n<\/div>\nghotinet<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 4 years ago<\/strong><\/div>\n\nMost spreadsheet programs have a rather nice little built-in function called NETWORKDAYS to calculate the number of business days (i.e. Monday-Friday, excluding holidays) between any two given dates. I couldn't find a simple way to do that in PHP, so I threw this together. It replicates the functionality of OpenOffice's NETWORKDAYS function - you give it a start date, an end date, and an array of any holidays you want skipped, and it'll tell you the number of business days (inclusive of the start and end days!) between them.<\/p>\nI've tested it pretty strenuously but date arithmetic is complicated and there's always the possibility I missed something, so please feel free to check my math.<\/p>\n The function could certainly be made much more powerful, to allow you to set different days to be ignored (e.g. \"skip all Fridays and Saturdays but include Sundays\") or to set up dates that should always be skipped (e.g. \"skip July 4th in any year, skip the first Monday in September in any year\"). But that's a project for another time.<\/p>\n <?php<\/p>\n <\/span>function <\/span>networkdays<\/span>(<\/span>$s<\/span>, <\/span>$e<\/span>, <\/span>$holidays <\/span>= array()) { \n<\/span>\/\/ If the start and end dates are given in the wrong order, flip them. \n<\/span>if (<\/span>$s <\/span>> <\/span>$e<\/span>) \nreturn <\/span>networkdays<\/span>(<\/span>$e<\/span>, <\/span>$s<\/span>, <\/span>$holidays<\/span>);<\/p>\n <\/span>\/\/ Find the ISO-8601 day of the week for the two dates. \n<\/span>$sd <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$s<\/span>); \n<\/span>$ed <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$e<\/span>);<\/p>\n <\/span>\/\/ Find the number of weeks between the dates. \n<\/span>$w <\/span>= <\/span>floor<\/span>((<\/span>$e <\/span>- <\/span>$s<\/span>)\/(<\/span>86400<\/span><\/span>7<\/span>));\u00a0 \u00a0 <\/span># Divide the difference in the two times by seven days to get the number of weeks. \n<\/span>if (<\/span>$ed <\/span>>= <\/span>$sd<\/span>) { <\/span>$w<\/span>--; }\u00a0 \u00a0 \u00a0 \u00a0 <\/span># If the end date falls on the same day of the week or a later day of the week than the start date, subtract a week.<\/p>\n \/\/ Calculate net working days. \n<\/span>$nwd <\/span>= <\/span>max<\/span>(<\/span>6 <\/span>- <\/span>$sd<\/span>, <\/span>0<\/span>);\u00a0 \u00a0 <\/span># If the start day is Saturday or Sunday, add zero, otherewise add six minus the weekday number. \n<\/span>$nwd <\/span>+= <\/span>min<\/span>(<\/span>$ed<\/span>, <\/span>5<\/span>);\u00a0 \u00a0 <\/span># If the end day is Saturday or Sunday, add five, otherwise add the weekday number. \n<\/span>$nwd <\/span>+= <\/span>$w <\/span> <\/span>5<\/span>;\u00a0 \u00a0 \u00a0 \u00a0 <\/span># Add five days for each week in between.<\/p>\n \/\/ Iterate through the array of holidays. For each holiday between the start and end dates that isn't a Saturday or a Sunday, remove one day. \n<\/span>foreach (<\/span>$holidays <\/span>as <\/span>$h<\/span>) { \n<\/span>$h <\/span>= <\/span>strtotime<\/span>(<\/span>$h<\/span>); \nif (<\/span>$h <\/span>> <\/span>$s <\/span>&& <\/span>$h <\/span>< <\/span>$e <\/span>&& <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$h<\/span>) < <\/span>6<\/span>) \n<\/span>$nwd<\/span>--; \n}<\/p>\n return <\/span>$nwd<\/span>; \n}<\/p>\n <\/span>$start <\/span>= <\/span>strtotime<\/span>(<\/span>\"1 January 2010\"<\/span>); \n<\/span>$end <\/span>= <\/span>strtotime<\/span>(<\/span>\"13 December 2010\"<\/span>);<\/p>\n <\/span>\/\/ Add as many holidays as desired. \n<\/span>$holidays <\/span>= array(); \n<\/span>$holidays<\/span>[] = <\/span>\"4 July 2010\"<\/span>;\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <\/span>\/\/ Falls on a Sunday; doesn't affect count \n<\/span>$holidays<\/span>[] = <\/span>\"6 September 2010\"<\/span>;\u00a0 \u00a0 \u00a0 \u00a0 <\/span>\/\/ Falls on a Monday; reduces count by one<\/p>\n <\/span>echo <\/span>networkdays<\/span>(<\/span>$start<\/span>, <\/span>$end<\/span>, <\/span>$holidays<\/span>);\u00a0 \u00a0 <\/span>\/\/ Returns 246<\/p>\n <\/span>?> \n<\/span> \nOr, if you just want to know how many work days there are in any given year, here's a quick function for that one:<\/p>\n <?php<\/p>\n <\/span>function <\/span>workdaysinyear<\/span>(<\/span>$y<\/span>) { \n<\/span>$j1 <\/span>= <\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>1<\/span>,<\/span>1<\/span>,<\/span>$y<\/span>); \nif (<\/span>date<\/span>(<\/span>\"L\"<\/span>, <\/span>$j1<\/span>)) { \nif (<\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>6<\/span>) \nreturn <\/span>260<\/span>; \nelseif (<\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>5 <\/span>or <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>7<\/span>) \nreturn <\/span>261<\/span>; \nelse \nreturn <\/span>262<\/span>; \n} \nelse { \nif (<\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>6 <\/span>or <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>7<\/span>) \nreturn <\/span>260<\/span>; \nelse \nreturn <\/span>261<\/span>; \n} \n}<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n2<\/div>\n<\/div>\ngerben at gerbenwijnja dot nl<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nI use the function below to calculate the Unix timestamp of the start of a week. It includes a boolean flag to request a GMT offset instead of the current locale setting.<\/p>\n<?php<\/p>\n <\/span>function <\/span>getWeekOffsetTimestamp<\/span>(<\/span>$year<\/span>, <\/span>$week<\/span>, <\/span>$useGmt <\/span>= <\/span>false<\/span>) { \nif (<\/span>$useGmt<\/span>) { \n<\/span>\/\/ Backup timezone and set to GMT \n<\/span>$timezoneSettingBackup <\/span>=<\/span>date_default_timezone_get<\/span>(); \n<\/span>date_default_timezone_set<\/span>(<\/span>\"GMT\"<\/span>); \n}<\/p>\n <\/span>\/\/ According to ISO-8601, January 4th is always in week 1 \n<\/span>$halfwayTheWeek <\/span>= <\/span>strtotime<\/span>(<\/span>$year<\/span>.<\/span>\"0104 +\"<\/span>.(<\/span>$week <\/span>- <\/span>1<\/span>).<\/span>\" weeks\"<\/span>);<\/p>\n <\/span>\/\/ Subtract days to Monday \n<\/span>$dayOfTheWeek <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$halfwayTheWeek<\/span>); \n<\/span>$daysToSubtract <\/span>= <\/span>$dayOfTheWeek <\/span>- <\/span>1<\/span>;<\/p>\n <\/span>\/\/ Calculate the week's timestamp \n<\/span>$unixTimestamp <\/span>= <\/span>strtotime<\/span>(<\/span>\"-<\/span>$daysToSubtract<\/span> day\"<\/span>,<\/span>$halfwayTheWeek<\/span>);<\/p>\n if (<\/span>$useGmt<\/span>) { \n<\/span>\/\/ Reset timezone to backup \n<\/span>date_default_timezone_set<\/span>(<\/span>$timezoneSettingBackup<\/span>); \n}<\/p>\n return <\/span>$unixTimestamp<\/span>; \n}<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\nmatthew dot hotchen at worldfirst dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nFYI: there's a list of constants with predefined formats on the DateTime object, for example instead of outputting ISO 8601 dates with:<\/p>\n<?php \n<\/span>echo <\/span>date<\/span>(<\/span>'c'<\/span>); \n<\/span>?> \n<\/span> \nor<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>'Y-m-d\\TH:i:sO'<\/span>); \n<\/span>?> \n<\/span> \nYou can use<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>DateTime<\/span>::<\/span>ISO8601<\/span>); \n<\/span>?> \n<\/span> \ninstead, which is much easier to read.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\n@PeteWilliams<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 4 years ago<\/strong><\/div>\n\nIf you want to use HTML5's <date> tag, the following code will generate the machine-readable value for the 'datetime' attribute:<\/p>\n<?php<\/p>\n <\/span>\/** \n* formats the date passed into format required by 'datetime' attribute of <date> tag \n* if no intDate supplied, uses current date. \n* @param intDate integer optional \n* @return string \n*\/ \n<\/span>function <\/span>getDateTimeValue<\/span>( <\/span>$intDate <\/span>= <\/span>null <\/span>) {<\/p>\n <\/span>$strFormat <\/span>= <\/span>'Y-m-d\\TH:i:s.uP'<\/span>; \n<\/span>$strDate <\/span>= <\/span>$intDate <\/span>? <\/span>date<\/span>( <\/span>$strFormat<\/span>, <\/span>$intDate <\/span>) : <\/span>date<\/span>(<\/span>$strFormat <\/span>) ;<\/p>\n return <\/span>$strDate<\/span>; \n}<\/p>\n echo <\/span>getDateTimeValue<\/span>();<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n2<\/div>\n<\/div>\nEdward Rudd<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 5 years ago<\/strong><\/div>\n\nTo actually make use ot the \"u\" (microsecond) you need to use the DateTime object and not the date() function.<\/p>\nFor example<\/p>\n <?php \n$t <\/span>= <\/span>microtime<\/span>(<\/span>true<\/span>); \n<\/span>$micro <\/span>= <\/span>sprintf<\/span>(<\/span>\"%06d\"<\/span>,(<\/span>$t <\/span>- <\/span>floor<\/span>(<\/span>$t<\/span>)) <\/span>1000000<\/span>); \n<\/span>$d <\/span>= new <\/span>DateTime<\/span>( <\/span>date<\/span>(<\/span>'Y-m-d H:i:s.'<\/span>.<\/span>$micro<\/span>,<\/span>$t<\/span>) );<\/p>\n print <\/span>$d<\/span>-><\/span>format<\/span>(<\/span>\"Y-m-d H:i:s.u\"<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\nJonathanCross.com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 6 years ago<\/strong><\/div>\n\n<?php \n<\/span>\/\/ A demonstration of the new DateTime class for those \n\/\/ trying to use dates before 1970 or after 2038. \n<\/span>?> \n<\/span><h2>PHP 2038 date bug demo (php version <?php <\/span>echo <\/span>phpversion<\/span>(); <\/span>?><\/span>)<\/h1> \n<div style='float:left;margin-right:3em;'> \n<h3>OLD Buggy date()<\/h3> \n<?php \n$format<\/span>=<\/span>'F j, Y'<\/span>; \nfor ( <\/span>$i <\/span>= <\/span>1900<\/span>; <\/span>$i <\/span>< <\/span>2050<\/span>; <\/span>$i<\/span>++) { \n<\/span>$datep <\/span>= <\/span>\"<\/span>$i<\/span>-01-01\"<\/span>; \n<\/span>?> \n<\/span>\u00a0 \u00a0 Trying: <?php <\/span>echo <\/span>$datep<\/span>; <\/span>?><\/span> = <?php <\/span>echo <\/span>date<\/span>(<\/span>$format<\/span>,<\/span>strtotime<\/span>(<\/span>$datep<\/span>)); <\/span>?><\/span><br> \n<?php \n<\/span>} \n<\/span>?><\/span><\/div> \n<div style='float:left;'> \n<h3>NEW DateTime Class (v 5.2+)<\/h3><?php \n<\/span>for ( <\/span>$i <\/span>= <\/span>1900<\/span>; <\/span>$i <\/span>< <\/span>2050<\/span>; <\/span>$i<\/span>++) { \n<\/span>$datep <\/span>= <\/span>\"<\/span>$i<\/span>-01-01\"<\/span>; \n<\/span>$date <\/span>= new <\/span>DateTime<\/span>(<\/span>$datep<\/span>); \n<\/span>?> \n<\/span>\u00a0 \u00a0 Trying: <?php <\/span>echo <\/span>$datep<\/span>; <\/span>?><\/span> = <?php <\/span>echo <\/span>$date<\/span>-><\/span>format<\/span>(<\/span>$format<\/span>); <\/span>?><\/span><br> \n<?php \n<\/span>} \n<\/span>?><\/span><\/div><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n0<\/div>\n<\/div>\nlb at bostontech dot net<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 5 years ago<\/strong><\/div>\n\nNot sure why this got ignored the first time, but this is an even simpler way to check leap year:<\/p>\n<?php \n<\/span>function <\/span>isLeapYear<\/span>(<\/span>$year<\/span>) \n{ return (((<\/span>$year<\/span>%<\/span>4<\/span>==<\/span>0<\/span>) && (<\/span>$year<\/span>%<\/span>100<\/span>)) \|\| <\/span>$year<\/span>%<\/span>400<\/span>==<\/span>0<\/span>) ? (<\/span>true<\/span>):(<\/span>false<\/span>); } \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-1<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nWas trying to compare dates when I noticed that:<\/p>\n<?php<\/p>\n var_dump<\/span>(<\/span>date<\/span>(<\/span>'d.m.Y'<\/span>, <\/span>null<\/span>));<\/span>\/\/string(10) \"01.01.1970\" \n<\/span>var_dump<\/span>(<\/span>date<\/span>(<\/span>'d.m.Y'<\/span>, <\/span>''<\/span>));<\/span>\/\/bool(false)<\/p>\n <\/span>?> \n<\/span> \nThought it's worth mentioning. Caused some weird logs to be produced in our system since this does not evaluate to the same.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-2<\/div>\n<\/div>\nm_ocx at yahoo dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nHere is a cool Date class to implement the date function:<\/p>\n<?php \n<\/span>\/* \n* @author\u00a0 \u00a0 Gchats \n* \n* Date class \n\/ \n<\/span>class <\/span>Date \n<\/span>{ \nprivate <\/span>$shortDateFormat <\/span>= <\/span>\"F j, Y\"<\/span>; \nprivate <\/span>$longDateFormat <\/span>= <\/span>\"F j, Y, g:i a\"<\/span>; \nprivate <\/span>$timestamp <\/span>= <\/span>0<\/span>;<\/p>\n <\/span>\/* \n* Default constructor \n* \n* @param\u00a0 \u00a0 integer\u00a0 \u00a0 \u00a0 \u00a0 $timestamp\u00a0 \u00a0 unix time stamp \n\/ \n<\/span>function <\/span>__construct<\/span>(<\/span>$timestamp <\/span>= <\/span>0<\/span>) \n{ \n<\/span>$this<\/span>-><\/span>timestamp <\/span>= <\/span>$timestamp<\/span>; \n}<\/p>\n <\/span>\/* \n* Returns the given timestamp in the constructor \n* \n* @return\u00a0 \u00a0 integer\u00a0 \u00a0 \u00a0 \u00a0 time stamp \n\/ \n<\/span>public function <\/span>getTime<\/span>() \n{ \nreturn (int) <\/span>$this<\/span>-><\/span>timestamp<\/span>; \n}<\/p>\n <\/span>\/ \n* Returns long formatted date of the given timestamp \n* \n* @access public \n* @return\u00a0 \u00a0\u00a0 string\u00a0 \u00a0 Long formatted date \n\/ \n<\/span>public function <\/span>long<\/span>() \n{ \nif ( <\/span>$this<\/span>-><\/span>timestamp <\/span>> <\/span>0 <\/span>) \n{ \nreturn <\/span>date <\/span>( <\/span>$this<\/span>-><\/span>longDateFormat <\/span>, <\/span>$this<\/span>-><\/span>timestamp<\/span>); \n} \nelse \n{ \nreturn <\/span>\"\"<\/span>; \n} \n}<\/p>\n <\/span>\/ \n* Returns short formatted date of the given timestamp \n* \n* @access public \n* @return\u00a0 \u00a0\u00a0 string\u00a0 \u00a0 Short formatted date \n\/ \n<\/span>public function <\/span>short<\/span>() \n{ \nif ( <\/span>$this<\/span>-><\/span>timestamp <\/span>> <\/span>0 <\/span>) \n{ \nreturn <\/span>date <\/span>( <\/span>$this<\/span>-><\/span>shortDateFormat <\/span>, <\/span>$this<\/span>-><\/span>timestamp<\/span>); \n} \nelse \n{ \nreturn <\/span>\"\"<\/span>; \n} \n}<\/p>\n public function <\/span>__toString<\/span>() \n{ \nreturn <\/span>$this<\/span>-><\/span>timestamp<\/span>; \n}<\/p>\n } \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-3<\/div>\n<\/div>\njc<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 7 years ago<\/strong><\/div>\n\ndate(\"W\") returns the iso8601 week number, while date(\"Y\") returns the _current_ year. This can lead to odd results. For example today (dec 31, 2007) it returns 1 for the week and of course 2007 for the year. This is not wrong in a strict sense because iso defines this week as the first of 2008 while we still have 2007.<\/p>\nSo, if you don't have another way to safely retrieve the year according to the iso8061 week-date - strftime(\"%G\") doesn't work on some systems -, you should be careful when working with date(\"W\").<\/p>\n For most cases strftime(\"%W\") should be a safe replacement.<\/p>\n[edit: Much easier is to use \"o\" (lower case O) instead of \"Y\"]<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nAnon<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nI needed to convet a duration timestamp into H:i:s but whenever I did it kept bringing 5 back as 01:00:05 (due to some DST stuff) so I made this function to replace date(). It has no optimisations but hopefully someone might find it useful:<\/p>\n<?php \n<\/span>function <\/span>get_time_string<\/span>(){ \n<\/span>$time <\/span>= <\/span>3600<\/span>+(<\/span>60<\/span><\/span>32<\/span>)+(<\/span>50<\/span>); <\/span>\/\/ 01:32:50 \n<\/span>$time_string <\/span>= <\/span>''<\/span>;<\/p>\n <\/span>$hours <\/span>= (int)(<\/span>$time<\/span>\/(<\/span>60<\/span><\/span>60<\/span>)); \nif(<\/span>strlen<\/span>(<\/span>$hours<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>= <\/span>$hours<\/span>.<\/span>':'<\/span>; \n}else{ \n<\/span>$time_string <\/span>= <\/span>'0'<\/span>.<\/span>$hours<\/span>.<\/span>':'<\/span>; \n}<\/p>\n <\/span>$minutes <\/span>= (int)((<\/span>$time<\/span>%(<\/span>60<\/span><\/span>60<\/span>))\/(<\/span>60<\/span>)); \nif(<\/span>$minutes <\/span>>= <\/span>1<\/span>){ \nif(<\/span>strlen<\/span>(<\/span>$minutes<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>.= <\/span>$minutes<\/span>.<\/span>':'<\/span>; \n}else{ \n<\/span>$time_string <\/span>.= <\/span>'0'<\/span>.<\/span>$minutes<\/span>.<\/span>':'<\/span>; \n}<\/p>\n <\/span>$seconds <\/span>= (<\/span>$time<\/span>%(<\/span>60<\/span><\/span>60<\/span>))%(<\/span>60<\/span>); \nif(<\/span>strlen<\/span>(<\/span>$seconds<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>.= <\/span>$seconds<\/span>; \n}else{ \n<\/span>$time_string <\/span>.= <\/span>'0'<\/span>.<\/span>$seconds<\/span>; \n} \n}else{ \nif(<\/span>strlen<\/span>(<\/span>$time<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>.= <\/span>'00:'<\/span>.<\/span>$time<\/span>; \n}else{ \n<\/span>$time_string <\/span>.= <\/span>'00:0'<\/span>.<\/span>$time<\/span>; \n} \n} \nreturn <\/span>$time_string<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-3<\/div>\n<\/div>\nJust.Kevin<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 5 years ago<\/strong><\/div>\n\nIn order to determine if a year is a leap year an earlier poster suggested simply checking to see if the year is a multiple of four:<\/p>\n<?php \n<\/span>function <\/span>is_leapyear_broken<\/span>(<\/span>$year <\/span>= <\/span>2004<\/span>) { \nreturn (<\/span>$year<\/span>%<\/span>4<\/span>)==<\/span>0<\/span>; \n} \n<\/span>?> \n<\/span> \nWhile this will work for the majority of years it will not work on years that are multiples of 100 but not multiples of 400 i.e.(2100). \nA function not using php's date() function that will also account for this small anomaly in leap years:<\/p>\n <?php \n<\/span>function <\/span>is_leapyear_working<\/span>(<\/span>$year <\/span>= <\/span>2004<\/span>) { \nif(((<\/span>$year<\/span>%<\/span>4<\/span>==<\/span>0<\/span>) && (<\/span>$year<\/span>%<\/span>100<\/span>!=<\/span>0<\/span>)) \|\| <\/span>$year<\/span>%<\/span>400<\/span>==<\/span>0<\/span>) { \nreturn <\/span>true<\/span>; \n} \nreturn <\/span>false<\/span>; \n} \n<\/span>?> \n<\/span> \nWhile is_leapyear_working will not return true for the few non-leap years divisible by four I couldn't tell you if this is more or less efficient than using php's date() as an even earlier poster suggested:<\/p>\n <?php \n<\/span>function <\/span>is_leapyear<\/span>(<\/span>$year <\/span>= <\/span>2004<\/span>) { \n<\/span>$is_leap <\/span>= <\/span>date<\/span>(<\/span>'L'<\/span>, <\/span>strtotime<\/span>(<\/span>\"<\/span>$year<\/span>-1-1\"<\/span>)); \nreturn <\/span>$is_leap<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-5<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nTo find last sunday for given date<\/p>\n<?php \n$day <\/span>= <\/span>'2012-10-04'<\/span>; \necho <\/span>'last sunday :\u00a0 '<\/span>.<\/span>date<\/span>(<\/span>\"Y-m-d\"<\/span>,<\/span>strtotime<\/span>(<\/span>$day<\/span>.<\/span>\" last Sunday \"<\/span>)); \n<\/span>?> \n<\/span> \noutput:<\/p>\n last sunday : 2012-09-30<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nChris<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nUse this to convert the local\/UTC hour to the UTC\/local hour:<\/p>\n<?php \n<\/span>for(<\/span>$utc_to_local <\/span>= array(), <\/span>$offset <\/span>= <\/span>date<\/span>(<\/span>'Z'<\/span>), <\/span>$h <\/span>= <\/span>0<\/span>; <\/span>$h <\/span>< <\/span>24<\/span>;<\/span>$utc_to_local<\/span>[] = <\/span>date<\/span>(<\/span>'G'<\/span>, <\/span>mktime<\/span>(<\/span>$h<\/span>++)+<\/span>$offset<\/span>)); \n<\/span>$local_to_utc <\/span>= <\/span>array_flip<\/span>(<\/span>$utc_to_local<\/span>);<\/p>\n echo <\/span>\"2 am local is \"<\/span>, <\/span>$local_to_utc<\/span>[<\/span>2<\/span>], <\/span>\" UTC\"<\/span>; \necho <\/span>\"3 pm UTC is \"<\/span>, <\/span>$utc_to_local<\/span>[<\/span>15<\/span>], <\/span>\" local\"<\/span>; \n<\/span>?> \n<\/span> \nThis is useful when you need to do many conversions. Lookup tables are faster than calling date() and mktime() multiple times.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nfrank at interactinet dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nIf you want to compare this week with the same week last year, here is some code to get you the time at the beginning of the week.\u00a0 You can then add days, hours, etc to get to the day of the week that you want to know about.<\/p>\n<?php \n$time_passed <\/span>= (<\/span>date<\/span>(<\/span>'N'<\/span>)-<\/span>1<\/span>) <\/span>24 <\/span>* <\/span>3600<\/span>; <\/span>\/\/ time since start of week in days \n<\/span>$startOfWeek <\/span>= <\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>date<\/span>(<\/span>'m'<\/span>),<\/span>date<\/span>(<\/span>'d'<\/span>),<\/span>date<\/span>(<\/span>'Y'<\/span>)) - <\/span>$time_passed<\/span>;<\/p>\n <\/span>$lastyear <\/span>= <\/span>$startOfWeek <\/span>- <\/span>365<\/span><\/span>24<\/span><\/span>3600<\/span>;<\/p>\n <\/span>\/\/ make sure time used from last year is the same week of the year \n<\/span>$weekdiff <\/span>= <\/span>date<\/span>(<\/span>'W'<\/span>) - <\/span>date<\/span>(<\/span>'W'<\/span>,<\/span>$lastyear<\/span>); \nif(<\/span>$weekdiff <\/span>!= <\/span>0<\/span>) \n{ \n<\/span>$lastyear <\/span>= <\/span>$lastyear <\/span>+ (<\/span>$weekdiff<\/span><\/span>7<\/span><\/span>24<\/span><\/span>3600<\/span>); \n}<\/p>\n <\/span>$lastyear_time_passed <\/span>= (<\/span>date<\/span>(<\/span>'N'<\/span>,<\/span>$lastyear<\/span>)-<\/span>1<\/span>) <\/span>24 <\/span><\/span>3600<\/span>; <\/span>\/\/ time since start of week in days<\/p>\n <\/span>$startOfWeek_lastyear <\/span>=<\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>date<\/span>(<\/span>'m'<\/span>,<\/span>$lastyear<\/span>),<\/span>date<\/span>(<\/span>'d'<\/span>,<\/span>$lastyear<\/span>),<\/span>date<\/span>(<\/span>'Y'<\/span>,<\/span>$lastyear<\/span>)) - <\/span>$lastyear_time_passed<\/span>; \n<\/span>?> \n<\/span> \nSo now you have the unix time for the start of this week ($startOfWeek), and the start of the same week last year ($startOfWeek_lastyear).<\/p>\n You can convert back to datetime format easily:<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>'Y-m-d H:i:s'<\/span>,<\/span>$startOfWeek<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>date<\/span>(<\/span>'Y-m-d H:i:s'<\/span>,<\/span>$startOfWeek_lastyear<\/span>).<\/span>'<br><br>'<\/span>;<\/p>\n echo <\/span>date<\/span>(<\/span>'l F jS, Y'<\/span>,<\/span>$startOfWeek<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>date<\/span>(<\/span>'l F jS, Y'<\/span>,<\/span>$startOfWeek_lastyear<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nscott at keenot dot es<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nIf anyone needs a really fast function for converting a datetime string (i.e. as retrieved from a MySQL DATETIME entry) into a human-friendly time output analogous to date($format, $time), here's a useful function.<\/p>\n<?php \n<\/span>function <\/span>fdate<\/span>(<\/span>$datetimestring <\/span>= <\/span>'1970-01-01 00:00:00'<\/span>, <\/span>$format <\/span>=<\/span>'U'<\/span>) { \n<\/span>\/\/ Create a datetime object, return it formatted \n\/\/ If you want to give credit for this somewhere, thanks. \n\/\/ You really don't have to though; this is kinda obvious \n<\/span>$dt <\/span>= new <\/span>DateTime<\/span>(<\/span>$datetimestring<\/span>); \nreturn <\/span>$dt<\/span>-><\/span>format<\/span>(<\/span>$format<\/span>); \n} \n<\/span>?> \n<\/span> \nThe main purpose of this is to reduce lines of code and allow inline coding. For example: \n<?php \n<\/span>\/ ... \/ \n<\/span>echo <\/span>\"This page was submitted on \"<\/span>.<\/span>fdate<\/span>(<\/span>$row<\/span>[<\/span>'created'<\/span>], <\/span>'F j, Y g:i:s A'<\/span>).<\/span>\" and last modified \"<\/span>.<\/span>fdate<\/span>(<\/span>$row<\/span>[<\/span>'modified'<\/span>], <\/span>'F j, Y g:i:s A'<\/span>).<\/span>\"<br \/>\\n\"<\/span>; \n<\/span>\/ ... \/ \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nstokestack at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nIf you want to find your server's timezone offset from GMT, it seems as though you could just do:<\/p>\ndate('Z')<\/p>\n to get the number of seconds offset. But PHP requires that you call date_default_timezone_set().\u00a0 So if you have to hard-code a timezone, why not simply hard-code a variable that tells you the offset from GMT?\u00a0 If you set the timezone to GMT, the dates in your database will still be in local time, but time('Z') will return zero.<\/p>\n To keep your code portable across servers in different timezones, you can do this:<\/p>\n date_default_timezone_set(date_default_timezone_get())<\/p>\n This keeps PHP from complaining that you haven't called date_default_timezone_set(), but makes your code portable.\u00a0 Ridiculous.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-8<\/div>\n<\/div>\nlehal2 at hotmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nhere is an example how you can make numeric days of the week from 1 to 7(Monday to Friday)<\/p>\n<?php \n$currentdate\u00a0 <\/span>= <\/span>mktime<\/span>(<\/span>0<\/span>, <\/span>0<\/span>, <\/span>0<\/span>, <\/span>date<\/span>(<\/span>\"m\"<\/span>)\u00a0 , <\/span>date<\/span>(<\/span>\"d\"<\/span>), <\/span>date<\/span>(<\/span>\"Y\"<\/span>)); \necho <\/span>$day_eg1 <\/span>= <\/span>date <\/span>(<\/span>'N'<\/span>,<\/span>$currentdate<\/span>); \necho <\/span>$day_eg2 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>1 <\/span> <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg3<\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>2 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg4 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>3 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg5 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>4 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg6 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>5 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg7 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>6 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-10<\/div>\n<\/div>\nblinov vyacheslav AT gmail.com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nIt was oblivious and discouraging that it dont mentioned in docs. If you will use W to get week number be aware: \nfirst days of year can be in a week of previous year, and week number always has leading zero<\/p>\n<?php<\/p>\n <\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-07\"<\/span>)); <\/span>\/\/ gives 201101 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-01\"<\/span>)); <\/span>\/\/ gives 201152 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-12-31\"<\/span>)); <\/span>\/\/ gives 201152 too<\/p>\n <\/span>?> \n<\/span> \nso you can`t rely on number of week given from this function inside your program if you want to use it for some logic<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-6<\/div>\n<\/div>\nttt_joe_08<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nJust FYI, it's more appropriate to say \"UTC\", not \"GMT\". GMT was given up in 1972 and UTC is now the proper way. The reason being G stands for Greenwich, which naturally upset some people.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-6<\/div>\n<\/div>\nJacques Marais<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nIf you want to print something like: Tuesday, the 14th of January, 2014<\/p>\nUse this:<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"l\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)).<\/span>', the'<\/span>.<\/span>date<\/span>(<\/span>\" jS\"<\/span>,<\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)).<\/span>' of'<\/span>.<\/span>date<\/span>(<\/span>\" F, Y\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)); \n<\/span>?> \n<\/span> \nThis is because you cannot use words in the date string. If you use words in the date string it will be seen as a format character<\/p>\n So if you use:<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"l, the jS of F, Y\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)); \n<\/span>?> \n<\/span> \nIt will print something like: Tuesday, 3108Europe\/Berlin 14th 2014f January, 2014<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-10<\/div>\n<\/div>\nchubby at chicks dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 7 years ago<\/strong><\/div>\n\n<?php \n<\/span>\/** \n* Checks wether a date is between an interval \n* \n* Usage: \n* \n* \/\/ check if today is older than 2008\/12\/31 \n* var_dump(currentDayIsInInterval('2008\/12\/31')); \n* \/\/ check if today is younger than 2008\/12\/31 \n* var_dump(currentDayIsInInterval(null,'2008\/12\/31')); \n* \/\/ check if today is between 2008\/12\/01 and 2008\/12\/31 \n* var_dump(currentDayIsInInterval('2008\/12\/01','2008\/12\/31')); \n* \n* Will trigger errors if date is in wrong format, notices if $begin > $end \n* \n* @param string $begin Date string as YYYY\/mm\/dd \n* @param string $end Date string as YYYY\/mm\/dd \n* @return bool \n\/ \n<\/span>function <\/span>currentDayIsInInterval<\/span>(<\/span>$begin <\/span>= <\/span>''<\/span>,<\/span>$end <\/span>= <\/span>''<\/span>) \n{ \n<\/span>$preg_exp <\/span>= <\/span>'\"[0-9][0-9][0-9][0-9]\/[0-9][0-9]\/[0-9][0-9]\"'<\/span>; \n<\/span>$preg_error <\/span>= <\/span>'Wrong parameter passed to function '<\/span>.<\/span>__FUNCTION__<\/span>.<\/span>' : Invalide date \nformat. Please use YYYY\/mm\/dd.'<\/span>; \n<\/span>$interval_error <\/span>= <\/span>'First parameter in '<\/span>.<\/span>__FUNCTION__<\/span>.<\/span>' should be smaller than \nsecond.'<\/span>; \nif(empty(<\/span>$begin<\/span>)) \n{ \n<\/span>$begin <\/span>= <\/span>0<\/span>; \n} \nelse \n{ \nif(<\/span>preg_match<\/span>(<\/span>$preg_exp<\/span>,<\/span>$begin<\/span>)) \n{ \n<\/span>$begin <\/span>= (int)<\/span>str_replace<\/span>(<\/span>'\/'<\/span>,<\/span>''<\/span>,<\/span>$begin<\/span>); \n} \nelse \n{ \n<\/span>trigger_error<\/span>(<\/span>$preg_error<\/span>,<\/span>E_USER_ERROR<\/span>); \n} \n} \nif(empty(<\/span>$end<\/span>)) \n{ \n<\/span>$end <\/span>= <\/span>99999999<\/span>; \n} \nelse \n{ \nif(<\/span>preg_match<\/span>(<\/span>$preg_exp<\/span>,<\/span>$end<\/span>)) \n{ \n<\/span>$end <\/span>= (int)<\/span>str_replace<\/span>(<\/span>'\/'<\/span>,<\/span>''<\/span>,<\/span>$end<\/span>); \n} \nelse \n{ \n<\/span>trigger_error<\/span>(<\/span>$preg_error<\/span>,<\/span>E_USER_ERROR<\/span>); \n} \n} \nif(<\/span>$end <\/span>< <\/span>$begin<\/span>) \n{ \n<\/span>trigger_error<\/span>(<\/span>$interval_error<\/span>,<\/span>E_USER_WARNING<\/span>); \n} \n<\/span>$time <\/span>= <\/span>time<\/span>(); \n<\/span>$now <\/span>= (int)(<\/span>date<\/span>(<\/span>'Y'<\/span>,<\/span>$time<\/span>).<\/span>date<\/span>(<\/span>'m'<\/span>,<\/span>$time<\/span>).<\/span>date<\/span>(<\/span>'j'<\/span>,<\/span>$time<\/span>)); \nif(<\/span>$now <\/span>> <\/span>$end <\/span>or <\/span>$now <\/span>< <\/span>$begin<\/span>) \n{ \nreturn <\/span>false<\/span>; \n} \nreturn <\/span>true<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-12<\/div>\n<\/div>\nRyan<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 7 months ago<\/strong><\/div>\n\nThat\u00a0 is just too hard anyone have it easier terms for a lad who only has internet for 5 mis a day cause he has to walk his pet peanut<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-28<\/div>\n<\/div>\nmatt<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\ndate() has some strange behavior at extremely high values:<\/p>\n<?php \n<\/span>echo <\/span>\"9223372036854775805: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775805<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775806: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775806<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775807: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775807<\/span>) . <\/span>\" (0x7FFFFFFFFFFFFFFF)\\n\"<\/span>; \necho <\/span>\"9223372036854775808: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775808<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775809: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775809<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775810: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775810<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854776832: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854776832<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854776833: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854776833<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854778879: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854778879<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854778880: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854778880<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854780928: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854780928<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854780929: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854780929<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854782975: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854782975<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854782976: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854782976<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854785024: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854785024<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854785025: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854785025<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854787071: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854787071<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854787072: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854787072<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854789120: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854789120<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854789121: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854789121<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854791167: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854791167<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854791168: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854791168<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854793215: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793215<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854793216: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793216<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854793217: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793217<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854793218: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793218<\/span>) . <\/span>\"\\n\"<\/span>; \n<\/span>?> \n<\/span> \nOutput:<\/p>\n 9223372036854775805: 292277026596-12-04 10:30:05 am \n9223372036854775806: 292277026596-12-04 10:30:06 am \n9223372036854775807: 292277026596-12-04 10:30:07 am (0x7FFFFFFFFFFFFFFF) \n9223372036854775808: 292277026596-12-04 10:30:08 am \n9223372036854775809: 292277026596-12-04 10:30:08 am \n9223372036854775810: 292277026596-12-04 10:30:08 am \n... \n9223372036854778879: 292277026596-12-04 10:30:08 am \n9223372036854778880: 292277026596-12-04 11:04:16 am \n... \n9223372036854778879: 292277026596-12-04 11:04:16 am \n9223372036854778880: 292277026596-12-04 11:38:24 am \n... \n9223372036854780928: 292277026596-12-04 11:38:24 am \n9223372036854780929: 292277026596-12-04 12:12:32 pm \n... \n9223372036854782975: 292277026596-12-04 12:12:32 pm \n9223372036854782976: 292277026596-12-04 12:46:40 pm \n... \n9223372036854785024: 292277026596-12-04 12:46:40 pm \n9223372036854785025: 292277026596-12-04 1:20:48 pm \n... \n9223372036854787071: 292277026596-12-04 1:20:48 pm \n9223372036854787072: 292277026596-12-04 1:54:56 pm \n... \n9223372036854789120: 292277026596-12-04 1:54:56 pm \n9223372036854789121: 292277026596-12-04 2:29:04 pm \n... \n9223372036854791167: 292277026596-12-04 2:29:04 pm \n9223372036854791168: 292277026596-12-04 3:03:12 pm \n... \n9223372036854793215: 292277026596-12-04 3:03:12 pm \n9223372036854793216: 292277026596-12-04 3:03:12 pm \n9223372036854793217: -292277022657-01-27 8:37:04 am \n9223372036854793218: -292277022657-01-27 8:37:04 am<\/p>\n ---<\/p>\n So, the last reliable unix timecode is 9223372036854775808 (0x1000000000000000). Not that you would probably ever need a date that high.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-9<\/div>\n<\/div>\nManu Manjunath<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nIf you want to use \"u\" format specifier for micrseconds without changing to DateTime object, you may write a function as below: \n<?php \n<\/span>\/* \n* Quick replacement to date() function to handle the 'u' format specifier (for microseconds) \n* @param string $format Date format string - the same format string you would pass to date() function \n* @param float $timestamp [optional] Unix timestamp with microseconds - Typically output of <b>microtime(true)<\/b> \n* @return string Formatted string \n\/ \n<\/span>function <\/span>date_with_micro<\/span>(<\/span>$format<\/span>, <\/span>$timestamp <\/span>= <\/span>null<\/span>) { \nif (<\/span>is_null<\/span>(<\/span>$timestamp<\/span>) \|\| <\/span>$timestamp <\/span>=== <\/span>false<\/span>) { \n<\/span>$timestamp <\/span>= <\/span>microtime<\/span>(<\/span>true<\/span>); \n} \n<\/span>$timestamp_int <\/span>= (int) <\/span>floor<\/span>(<\/span>$timestamp<\/span>); \n<\/span>$microseconds <\/span>= (int) <\/span>round<\/span>((<\/span>$timestamp <\/span>- <\/span>floor<\/span>(<\/span>$timestamp<\/span>)) <\/span>1000000.0<\/span>, <\/span>0<\/span>); \n<\/span>$format_with_micro <\/span>= <\/span>str_replace<\/span>(<\/span>\"u\"<\/span>, <\/span>$microseconds<\/span>, <\/span>$format<\/span>); \nreturn <\/span>date<\/span>(<\/span>$format_with_micro<\/span>, <\/span>$timestamp_int<\/span>); \n} \n<\/span>?> \n<\/span> \nYou can safely replace your date() function with date_with_micro().<\/span><\/code><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"(PHP 4, PHP 5) date \u2014 \u683c\u5f0f\u5316\u4e00\u4e2a\u672c\u5730\u65f6\u95f4\uff0f\u65e5\u671f...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-583","post","type-post","status-publish","format-standard","hentry","category-phpjsshell"],"_links":{"self":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=583"}],"version-history":[{"count":1,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/583\/revisions"}],"predecessor-version":[{"id":584,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/583\/revisions\/584"}],"wp:attachment":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

\n
Example #1 date()<\/span> \u4f8b\u5b50<\/strong><\/p>\n
\n
<?php \n\/\/\u00a0\u8bbe\u5b9a\u8981\u7528\u7684\u9ed8\u8ba4\u65f6\u533a\u3002\u81ea\u00a0PHP\u00a05.1\u00a0\u53ef\u7528 \ndate_default_timezone_set('UTC');<\/p>\n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aMonday \necho\u00a0date(\"l\");<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aMonday\u00a015th\u00a0of\u00a0August\u00a02005\u00a003:12:46\u00a0PM \necho\u00a0date('l\u00a0dS\u00a0\\of\u00a0F\u00a0Y\u00a0h:i:s\u00a0A');<\/p>\n \/\/\u00a0\u8f93\u51fa\uff1aJuly\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0Saturday \necho\u00a0\"July\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0\"\u00a0.\u00a0date(\"l\",\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000));<\/p>\n \/*\u00a0\u5728\u683c\u5f0f\u53c2\u6570\u4e2d\u4f7f\u7528\u5e38\u91cf\u00a0*\/ \n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aWed,\u00a025\u00a0Sep\u00a02013\u00a015:28:57\u00a0-0700 \necho\u00a0date(DATE_RFC2822);<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a2000-07-01T00:00:00+00:00 \necho\u00a0date(DATE_ATOM,\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000)); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n \u5728\u683c\u5f0f\u5b57\u4e32\u4e2d\u7684\u5b57\u7b26\u524d\u52a0\u4e0a\u53cd\u659c\u7ebf\u6765\u8f6c\u4e49\u53ef\u4ee5\u907f\u514d\u5b83\u88ab\u6309\u7167\u4e0a\u8868\u89e3\u91ca\u3002\u5982\u679c\u52a0\u4e0a\u53cd\u659c\u7ebf\u540e\u7684\u5b57\u7b26\u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u7279\u6b8a\u5e8f\u5217\uff0c\u90a3\u8fd8\u8981\u8f6c\u4e49\u53cd\u659c\u7ebf\u3002<\/p>\n\nExample #2 \u5728 date()<\/span> \u4e2d\u8f6c\u4e49\u5b57\u7b26<\/strong><\/p>\n\n<?php \n\/\/\u00a0prints\u00a0something\u00a0like:\u00a0Wednesday\u00a0the\u00a015th \necho\u00a0date(\"l\u00a0\\\\t\\h\\e\u00a0jS\"); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u53ef\u4ee5\u628a date()<\/strong><\/span> \u548c mktime()<\/a><\/span> \u51fd\u6570\u7ed3\u5408\u4f7f\u7528\u6765\u5f97\u5230\u672a\u6765\u6216\u8fc7\u53bb\u7684\u65e5\u671f\u3002<\/p>\n \nExample #3 date()<\/span> \u548c mktime()<\/a><\/span> \u4f8b\u5b50<\/strong><\/p>\n \n<?php \n$tomorrow\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")\u00a0\u00a0,\u00a0date(\"d\")+1,\u00a0date(\"Y\")); \n$lastmonth\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")-1,\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")); \n$nextyear\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\"),\u00a0\u00a0\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")+1); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\nNote<\/strong>:<\/p>\n \u7531\u4e8e\u590f\u4ee4\u65f6\u7684\u7f18\u6545\uff0c\u8fd9\u79cd\u65b9\u6cd5\u6bd4\u7b80\u5355\u5730\u5728\u65f6\u95f4\u6233\u4e0a\u52a0\u51cf\u4e00\u5929\u6216\u8005\u4e00\u4e2a\u6708\u7684\u79d2\u6570\u66f4\u53ef\u9760\u3002<\/p>\n<\/blockquote>\n \u4e00\u4e9b\u4f7f\u7528 date()<\/strong><\/span> \u683c\u5f0f\u5316\u65e5\u671f\u7684\u4f8b\u5b50\u3002\u6ce8\u610f\u8981\u8f6c\u4e49\u6240\u6709\u5176\u5b83\u7684\u5b57\u7b26\uff0c\u56e0\u4e3a\u76ee\u524d\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\u4f1a\u4ea7\u751f\u4e0d\u9700\u8981\u7684\u7ed3\u679c\uff0c\u800c\u5176\u4f59\u5b57\u7b26\u5728 PHP \u5c06\u6765\u7684\u7248\u672c\u4e2d\u53ef\u80fd\u4f1a\u88ab\u7528\u4e0a\u3002\u5f53\u8f6c\u4e49\u65f6\uff0c\u6ce8\u610f\u7528\u5355\u5f15\u53f7\u4ee5\u907f\u514d\u7c7b\u4f3c \\n \u7684\u5b57\u7b26\u53d8\u6210\u4e86\u6362\u884c\u7b26\u3002<\/p>\n\nExample #4 date()<\/span> \u683c\u5f0f\u4e3e\u4f8b<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u5047\u5b9a\u4eca\u5929\u662f\uff1aMarch\u00a010th,\u00a02001,\u00a05:16:18\u00a0pm \n$today\u00a0=\u00a0date(\"F\u00a0j,\u00a0Y,\u00a0g:i\u00a0a\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0March\u00a010,\u00a02001,\u00a05:16\u00a0pm \n$today\u00a0=\u00a0date(\"m.d.y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a003.10.01 \n$today\u00a0=\u00a0date(\"j,\u00a0n,\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a010,\u00a03,\u00a02001 \n$today\u00a0=\u00a0date(\"Ymd\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a020010310 \n$today\u00a0=\u00a0date('h-i-s,\u00a0j-m-y,\u00a0it\u00a0is\u00a0w\u00a0Day\u00a0z\u00a0');\u00a0\u00a0\/\/\u00a005-16-17,\u00a010-03-01,\u00a01631\u00a01618\u00a06\u00a0Fripm01 \n$today\u00a0=\u00a0date('\\i\\t\u00a0\\i\\s\u00a0\\t\\h\\e\u00a0jS\u00a0\\d\\a\\y.');\u00a0\u00a0\u00a0\/\/\u00a0It\u00a0is\u00a0the\u00a010th\u00a0day. \n$today\u00a0=\u00a0date(\"D\u00a0M\u00a0j\u00a0G:i:s\u00a0T\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0Sat\u00a0Mar\u00a010\u00a015:16:08\u00a0MST\u00a02001 \n$today\u00a0=\u00a0date('H:m:s\u00a0\\m\u00a0\\i\\s\\\u00a0\\m\\o\\n\\t\\h');\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:03:17\u00a0m\u00a0is\u00a0month \n$today\u00a0=\u00a0date(\"H:i:s\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:16:17 \n$today\u00a0=\u00a0date(\"Y-m-d\u00a0H:i:s\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a02001-03-10\u00a017:16:18\u00a0\uff08MySQL\u00a0DATETIME\u00a0\u683c\u5f0f\uff09 \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u8981\u683c\u5f0f\u5316\u5176\u5b83\u8bed\u79cd\u7684\u65e5\u671f\uff0c\u5e94\u8be5\u7528 setlocale()<\/a><\/span> \u548c strftime()<\/a><\/span> \u51fd\u6570\u6765\u4ee3\u66ff date()<\/strong><\/span>\u3002<\/p>\n \u53c2\u89c1 getlastmod()<\/a><\/span>\uff0cgmdate()<\/a><\/span>\uff0cmktime()<\/a><\/span>\uff0cstrftime()<\/a><\/span> \u548c time()<\/a><\/span>\u3002<\/p>\n<\/div>\n \n\u53c2\u6570<\/h3>\n\nformat<\/code><\/dt>\n\n\u8f93\u51fa\u7684\u65e5\u671f string<\/a><\/span> \u683c\u5f0f\u3002 \u53c2\u89c1\u4e0b\u6587\u4e2d\u7684 \u683c\u5f0f\u5316\u9009\u9879\u3002 \u540c\u65f6\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u9884\u5b9a\u4e49\u65e5\u671f\u5e38\u91cf<\/a> \uff0c\u4f8b\u5982\uff1a\u5e38\u91cf DATE_RSS<\/code><\/strong> \u8868\u793a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32 ‘D, d M Y H:i:s’<\/em>\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nformat<\/code> \u53c2\u6570\u5b57\u7b26\u4e32\u4e2d\u53ef\u8bc6\u522b\u4e0b\u5217\u5b57\u7b26<\/strong><\/caption>\nformat<\/code>\u5b57\u7b26<\/th>\n \u63cf\u8ff0<\/th>\n \u8fd4\u56de\u503c\u793a\u4f8b<\/th>\n<\/tr>\n<\/thead>\n \u5929<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n d<\/em><\/td>\n \u4e00\u4e2a\u6708\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 01<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n D<\/em><\/td>\n 3 \u4e2a\u5b57\u7b26\u8868\u793a\u7684\u661f\u671f\u51e0<\/td>\n \u4ece Mon<\/em> \u5230 Sun<\/em><\/td>\n<\/tr>\n j<\/em><\/td>\n \u4e00\u4e2a\u6708\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u65e0\u524d\u5bfc 0<\/td>\n \u4ece 1<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n l<\/em>(lowercase ‘L’)<\/td>\n \u661f\u671f\u51e0\uff0c\u82f1\u6587\u5168\u79f0<\/td>\n \u4ece Sunday<\/em> \u5230Saturday<\/em><\/td>\n<\/tr>\n N<\/em><\/td>\n ISO-8601 \u89c4\u5b9a\u7684\u6570\u5b57\u8868\u793a\u7684\u661f\u671f\u51e0\uff08PHP 5.1.0 \u65b0\u52a0 \uff09<\/td>\n \u4ece 1<\/em> \uff08\u8868\u793a\u661f\u671f\u4e00\uff09\u5230 7<\/em> \uff08\u8868\u793a\u661f\u671f\u65e5\uff09<\/td>\n<\/tr>\n S<\/em><\/td>\n \u4e00\u4e2a\u6708\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u5e26\u6709 2 \u4e2a\u5b57\u7b26\u8868\u793a\u7684\u82f1\u8bed\u5e8f\u6570\u8bcd\u3002<\/td>\n st<\/em>\uff0c nd<\/em>\uff0c rd<\/em> \u6216\u8005th<\/em>\u3002 \u53ef\u4ee5\u548c j<\/em> \u8054\u5408\u4f7f\u7528\u3002<\/td>\n<\/tr>\n w<\/em><\/td>\n \u6570\u5b57\u8868\u793a\u7684\u661f\u671f\u51e0<\/td>\n \u4ece 0<\/em> \uff08\u661f\u671f\u65e5\uff09 \u5230 6<\/em> \uff08\u661f\u671f\u516d\uff09<\/td>\n<\/tr>\n z<\/em><\/td>\n \u4e00\u5e74\u4e2d\u7684\u7b2c\u51e0\u5929\uff0c\u4ece 0 \u5f00\u59cb\u8ba1\u6570<\/td>\n \u4ece 0<\/em> \u5230 365<\/em><\/td>\n<\/tr>\n \u5468<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n W<\/em><\/td>\n ISO-8601 \u89c4\u8303\u7684\u4e00\u5e74\u4e2d\u7684\u7b2c\u51e0\u5468\uff0c\u5468\u4e00\u89c6\u4e3a\u4e00\u5468\u5f00\u59cb\u3002\uff08PHP 4.1.0 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a 42<\/em> \uff08\u672c\u5e74\u7b2c42\u5468\uff09<\/td>\n<\/tr>\n \u6708<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n F<\/em><\/td>\n \u6708\u4efd\u82f1\u6587\u5168\u62fc\uff0c\u4f8b\u5982\uff1aJanuary \u6216 March<\/td>\n \u4ece January<\/em> \u5230December<\/em><\/td>\n<\/tr>\n m<\/em><\/td>\n \u5e26\u6709 0 \u524d\u5bfc\u7684\u6570\u5b57\u8868\u793a\u7684\u6708\u4efd<\/td>\n \u4ece 01<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n M<\/em><\/td>\n 3 \u4e2a\u5b57\u7b26\u8868\u793a\u7684\u6708\u4efd\u7684\u82f1\u6587\u7b80\u62fc<\/td>\n \u4ece Jan<\/em> \u5230 Dec<\/em><\/td>\n<\/tr>\n n<\/em><\/td>\n \u6708\u4efd\u7684\u6570\u5b57\u8868\u793a\uff0c\u65e0\u524d\u5bfc 0<\/td>\n 1<\/em> through 12<\/em><\/td>\n<\/tr>\n t<\/em><\/td>\n \u7ed9\u5b9a\u6708\u4efd\u4e2d\u5305\u542b\u591a\u5c11\u5929<\/td>\n \u4ece 28<\/em> \u5230 31<\/em><\/td>\n<\/tr>\n \u5e74<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n L<\/em><\/td>\n \u662f\u5426\u4e3a\u95f0\u5e74<\/td>\n \u5982\u679c\u662f\u95f0\u5e74\uff0c\u5219\u8fd4\u56de 1<\/em>\uff0c\u53cd\u4e4b\u8fd4\u56de0<\/em>\u3002<\/td>\n<\/tr>\n o<\/em><\/td>\n ISO-8601 \u89c4\u8303\u7684\u5e74\u4efd\uff0c\u540c Y<\/em> \u683c\u5f0f\u3002\u6709\u4e00\u79cd\u60c5\u51b5\u9664\u5916\uff1a\u5f53 ISO \u7684\u5468\u6570\uff08W<\/em>\uff09\u5c5e\u4e8e\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u65f6\uff0c\u4f1a\u8fd4\u56de\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u7684\u5e74\u4efd\u6570\u5b57\u8868\u8fbe\u3002 \u5c5e\u4e8e\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u65f6\uff0c\u4f1a\u8fd4\u56de\u524d\u4e00\u5e74\u6216\u8005\u540e\u4e00\u5e74\u7684\u5e74\u4efd\u6570\u5b57\u8868\u8fbe\u3002 \uff08PHP 5.1.0 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a1999<\/em> \u62162003<\/em><\/td>\n<\/tr>\n Y<\/em><\/td>\n 4 \u4f4d\u6570\u5b57\u7684\u5e74\u4efd<\/td>\n \u793a\u4f8b\uff1a1999<\/em> \u62162003<\/em><\/td>\n<\/tr>\n y<\/em><\/td>\n 2 \u4f4d\u6570\u5b57\u7684\u5e74\u4efd<\/td>\n \u793a\u4f8b\uff1a 99<\/em> \u6216 03<\/em><\/td>\n<\/tr>\n \u65f6\u95f4<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n a<\/em><\/td>\n \u4e0a\u5348\u8fd8\u662f\u4e0b\u5348\uff0c2 \u4f4d\u5c0f\u5199\u5b57\u7b26<\/td>\n am<\/em> \u6216 pm<\/em><\/td>\n<\/tr>\n A<\/em><\/td>\n \u4e0a\u5348\u8fd8\u662f\u4e0b\u5348\uff0c2 \u4f4d\u5927\u5199\u5b57\u7b26<\/td>\n AM<\/em> \u6216 PM<\/em><\/td>\n<\/tr>\n B<\/em><\/td>\n \u65af\u6c83\u742a\u56e0\u7279\u7f51\u65f6\u95f4<\/td>\n \u4ece 000<\/em> \u5230 999<\/em><\/td>\n<\/tr>\n g<\/em><\/td>\n \u5c0f\u65f6\uff0c12\u65f6\u5236\uff0c\u65e0\u524d\u5bfc 0<\/td>\n \u4ece 1<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n G<\/em><\/td>\n \u5c0f\u65f6\uff0c24\u65f6\u5236\uff0c\u65e0\u524d\u5bfc 0<\/td>\n \u4ece 0<\/em> \u5230 23<\/em><\/td>\n<\/tr>\n h<\/em><\/td>\n \u5c0f\u65f6\uff0c12\u65f6\u5236\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 01<\/em> \u5230 12<\/em><\/td>\n<\/tr>\n H<\/em><\/td>\n \u5c0f\u65f6\uff0c24\u65f6\u5236\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n 00<\/em> through 23<\/em><\/td>\n<\/tr>\n i<\/em><\/td>\n \u5206\u949f\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 00<\/em> \u5230 59<\/em><\/td>\n<\/tr>\n s<\/em><\/td>\n \u79d2\uff0c\u6709\u524d\u5bfc 0 \u7684 2 \u4f4d\u6570\u5b57<\/td>\n \u4ece 00<\/em> \u5230 59<\/em><\/td>\n<\/tr>\n u<\/em><\/td>\n \u6beb\u79d2 \uff08PHP 5.2.2 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a 654321<\/em><\/td>\n<\/tr>\n \u65f6\u533a<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n e<\/em><\/td>\n \u65f6\u533a\u6807\u8bc6\uff08PHP 5.1.0 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b: UTC<\/em>, GMT<\/em>,Atlantic\/Azores<\/em><\/td>\n<\/tr>\n I<\/em> \uff08\u5927\u5199\u5b57\u6bcd i\uff09<\/td>\n \u662f\u5426\u590f\u4ee4\u65f6<\/td>\n \u5982\u679c\u662f\u590f\u4ee4\u65f6\u5219\u8fd4\u56de 1<\/em>\uff0c\u53cd\u4e4b\u8fd4\u56de0<\/em>\u3002<\/td>\n<\/tr>\n O<\/em><\/td>\n \u548c\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\uff08GMT\uff09\u7684\u65f6\u5dee\uff0c\u4ee5\u5c0f\u65f6\u4e3a\u5355\u4f4d<\/td>\n \u793a\u4f8b\uff1a +0200<\/em><\/td>\n<\/tr>\n P<\/em><\/td>\n \u548c\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\uff08GMT\uff09\u7684\u65f6\u5dee\uff0c\u5305\u62ec\u5c0f\u65f6\u548c\u5206\u949f\uff0c\u5c0f\u65f6\u548c\u5206\u949f\u4e4b\u95f4\u4f7f\u7528\u5192\u53f7\uff08:\uff09\u5206\u9694\uff08PHP 5.1.3 \u65b0\u52a0\uff09<\/td>\n \u793a\u4f8b\uff1a +02:00<\/em><\/td>\n<\/tr>\n T<\/em><\/td>\n \u65f6\u533a\u7f29\u5199<\/td>\n \u793a\u4f8b\uff1aEST<\/em>, MDT<\/em>…<\/td>\n<\/tr>\n Z<\/em><\/td>\n \u4ee5\u79d2\u4e3a\u5355\u4f4d\u7684\u65f6\u533a\u504f\u79fb\u91cf\u3002UTC \u4ee5\u897f\u7684\u65f6\u533a\u8fd4\u56de\u8d1f\u6570\uff0cUTC \u4ee5\u4e1c\u7684\u65f6\u533a\u8fd4\u56de\u6b63\u6570\u3002<\/td>\n \u4ece -43200<\/em> \u523050400<\/em><\/td>\n<\/tr>\n \u5b8c\u6574\u7684\u65e5\u671f\/\u65f6\u95f4<\/em><\/td>\n —<\/td>\n —<\/td>\n<\/tr>\n c<\/em><\/td>\n ISO 8601 \u65e5\u671f\u53ca\u65f6\u95f4\uff08PHP 5 \u65b0\u52a0\uff09<\/td>\n 2004-02-12T15:19:21+00:00<\/td>\n<\/tr>\n r<\/em><\/td>\n \u00bb\u00a0RFC 2822<\/a> \u683c\u5f0f\u7684\u65e5\u671f\u548c\u65f6\u95f4<\/td>\n \u793a\u4f8b\uff1aThu, 21 Dec 2000 16:01:07 +0200<\/em><\/td>\n<\/tr>\n U<\/em><\/td>\n \u81ea 1970 \u5e74 1 \u6708 1 \u65e5 0 \u65f6 0 \u5206 0 \u79d2\uff08GMT \u65f6\u95f4\uff09\u4ee5\u6765\u7684\u65f6\u95f4\uff0c\u4ee5\u79d2\u4e3a\u5355\u4f4d<\/td>\n \u53c2\u89c1time()<\/a><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u4e2d\u7684\u4e0d\u53ef\u8bc6\u522b\u5b57\u7b26\u5c06\u539f\u6837\u8f93\u51fa\u3002 \u5f53\u4f7f\u7528 gmdate()<\/a><\/span> \u51fd\u6570\u65f6\uff0cZ<\/em> \u683c\u5f0f\u6c38\u8fdc\u8fd4\u56de 0<\/em>\u3002<\/p>\n Note<\/strong>:<\/p>\n \u7531\u4e8e\u672c\u51fd\u6570\u4ec5\u63a5\u53d7 integer<\/a><\/span> \u7c7b\u578b\u7684\u65f6\u95f4\u6233\u53c2\u6570\uff0c\u6240\u4ee5 u<\/em> \u683c\u5f0f\u4ec5\u5728\u4f7f\u7528date_format()<\/a><\/span> \u51fd\u6570\u5e76\u4e14\u4f7f\u7528 date_create()<\/a><\/span> \u51fd\u6570\u521b\u5efa\u65f6\u95f4\u6233\u65f6\u624d\u662f\u6709\u7528\u7684\u3002<\/p>\n<\/blockquote>\n<\/dd>\n timestamp<\/code><\/dt>\n \n\u53ef\u9009\u7684 timestamp<\/code> \u53c2\u6570\u662f\u4e00\u4e2a integer<\/a><\/span> \u7684 Unix \u65f6\u95f4\u6233\uff0c\u5982\u672a\u6307\u5b9a\uff0c\u53c2\u6570\u503c\u9ed8\u8ba4\u4e3a\u5f53\u524d\u672c\u5730\u65f6\u95f4\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5176\u503c\u9ed8\u8ba4\u4e3a time()<\/a><\/span> \u7684\u8fd4\u56de\u503c\u3002<\/p>\n<\/dd>\n<\/dl>\n<\/div>\n \n\u8fd4\u56de\u503c<\/h3>\n\u8fd4\u56de\u683c\u5f0f\u5316\u540e\u7684\u65e5\u671f\u65f6\u95f4\u7684\u5b57\u7b26\u4e32\u8868\u8fbe\u3002 \u5982\u679c timestamp<\/code> \u53c2\u6570\u4e0d\u662f\u4e00\u4e2a\u6709\u6548\u6570\u503c\uff0c\u5219\u8fd4\u56de FALSE<\/code><\/strong> \u5e76\u5f15\u53d1 E_WARNING<\/code><\/strong> \u7ea7\u522b\u7684\u9519\u8bef\u3002<\/p>\n<\/div>\n\n\u9519\u8bef\uff0f\u5f02\u5e38<\/h3>\n\u5728\u6bcf \u6b21\u8c03\u7528\u65e5\u671f\/\u65f6\u95f4\u51fd\u6570\u65f6\uff0c\u5982\u679c\u65f6\u533a\u65e0\u6548\u5219\u4f1a\u5f15\u53d1 E_NOTICE<\/code><\/strong> \u9519\u8bef\uff0c\u5982\u679c\u4f7f\u7528\u7cfb\u7edf\u8bbe\u5b9a\u503c\u6216 TZ<\/var> \u73af\u5883\u53d8\u91cf\uff0c\u5219\u4f1a\u5f15\u53d1 E_STRICT<\/code><\/strong> \u6216 E_WARNING<\/code><\/strong> \u6d88\u606f\u3002\u53c2\u89c1date_default_timezone_set()<\/a><\/span>\u3002<\/p>\n<\/div>\n \n\u66f4\u65b0\u65e5\u5fd7<\/h3>\n\n\n\n\n\n\n\n\u7248\u672c<\/th>\n \u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n 5.1.0<\/td>\n \u65f6\u95f4\u6233\u7684\u6709\u6548\u53d6\u503c\u8303\u56f4\u4e3a GMT \u65f6\u95f4\u7684 1901 \u5e74 12 \u6708 13 \u65e5\u81f3 GMT \u65f6\u95f4\u7684 2038 \u5e74 1 \u6708 19 \u65e5\u3002 \uff0832 \u4f4d\u6709\u7b26\u53f7\u6574\u6570\u7684\u53d6\u503c\u8303\u56f4\uff09\u3002 \u4f46\u662f\uff0c\u5728 PHP 5.1.0 \u4e4b\u524d\u7684\u7248\u672c\uff0c\u5728\u67d0\u4e9b\u7cfb\u7edf\uff08\u4f8b\u5982 Windows\uff09\u4e0a\u6709\u6548\u53d6\u503c\u8303\u56f4\u4e3a 1970 \u5e74 1 \u6708 1 \u65e5\u81f3 2038 \u5e74 1 \u6708 19 \u65e5\u3002<\/td>\n<\/tr>\n 5.1.0<\/td>\n \n\u73b0\u5728\u53d1\u5e03 E_STRICT<\/code><\/strong> \u548c E_NOTICE<\/code><\/strong> \u65f6\u533a\u9519\u8bef\u3002<\/p>\n<\/td>\n<\/tr>\n 5.1.1<\/td>\n format<\/code> \u53c2\u6570\u6807\u51c6\u7684\u53ef\u7528\u65e5\u671f\/\u65f6\u95f4\u683c\u5f0f\u5e38\u91cf\u89c1\uff1a \u5e38\u91cf<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n\u8303\u4f8b<\/h3>\n\nExample #5 date()<\/span> \u51fd\u6570\u793a\u4f8b<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u8bbe\u7f6e\u9ed8\u8ba4\u65f6\u533a\u3002PHP\u00a05.1\u00a0\u4e4b\u540e\u7248\u672c\u53ef\u7528 \ndate_default_timezone_set('UTC');<\/p>\n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a\u00a0Monday \necho\u00a0date(\"l\");<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1aMonday\u00a08th\u00a0of\u00a0August\u00a02005\u00a003:12:46\u00a0PM \necho\u00a0date('l\u00a0jS\u00a0\\of\u00a0F\u00a0Y\u00a0h:i:s\u00a0A');<\/p>\n \/\/\u00a0\u8f93\u51fa\uff1aJuly\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0Saturday \necho\u00a0\"July\u00a01,\u00a02000\u00a0is\u00a0on\u00a0a\u00a0\"\u00a0.\u00a0date(\"l\",\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000));<\/p>\n \/*\u00a0\u4f7f\u7528\u683c\u5f0f\u5e38\u91cf\u00a0*\/ \n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a\u00a0Mon,\u00a015\u00a0Aug\u00a02005\u00a015:12:46\u00a0UTC \necho\u00a0date(DATE_RFC822);<\/p>\n \/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a2000-07-01T00:00:00+00:00 \necho\u00a0date(DATE_ATOM,\u00a0mktime(0,\u00a00,\u00a00,\u00a07,\u00a01,\u00a02000)); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n \u53ef\u4ee5\u4f7f\u7528\u53cd\u659c\u7ebf\u8fdb\u884c\u8f6c\u4e49\u6765\u963b\u6b62\u51fd\u6570\u89e3\u6790\u683c\u5f0f\u5b57\u7b26\u4e32\u4e2d\u7684\u53ef\u8bc6\u522b\u5b57\u7b26\u3002 \u5982\u679c\u53cd\u659c\u7ebf\u548c\u8981\u8f6c\u4e49\u7684\u5b57\u7b26\u8fde\u5728\u4e00\u8d77\u4f9d\u7136\u662f\u4e00\u4e2a\u6709\u6548\u7684\u5b57\u7b26\u5e8f\u5217\uff0c\u90a3\u4e48\u9700\u8981\u5bf9 \u53cd\u659c\u7ebf\u518d\u6b21\u8fdb\u884c\u8f6c\u4e49\u3002<\/p>\n\nExample #6 \u5bf9 date()<\/span> \u51fd\u6570\u4e2d\u7684\u683c\u5f0f\u5b57\u7b26\u4e32\u8fdb\u884c\u8f6c\u4e49<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u8f93\u51fa\u7c7b\u4f3c\uff1a\u00a0Wednesday\u00a0the\u00a015th \necho\u00a0date('l\u00a0\\t\\h\\e\u00a0jS'); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u53ef\u4ee5\u8054\u5408\u4f7f\u7528 date()<\/strong><\/span> \u548c mktime()<\/a><\/span> \u51fd\u6570 \u6765\u6784\u9020\u4e4b\u524d\u6216\u8005\u4e4b\u540e\u7684\u65e5\u671f\u65f6\u95f4\u3002<\/p>\n \nExample #7 date()<\/span> \u548c mktime()<\/a><\/span> \u8054\u5408\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n \n<?php \n$tomorrow\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")\u00a0\u00a0,\u00a0date(\"d\")+1,\u00a0date(\"Y\")); \n$lastmonth\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\")-1,\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")); \n$nextyear\u00a0\u00a0=\u00a0mktime(0,\u00a00,\u00a00,\u00a0date(\"m\"),\u00a0\u00a0\u00a0date(\"d\"),\u00a0\u00a0\u00a0date(\"Y\")+1); \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\nNote<\/strong>:<\/p>\n \u7531\u4e8e\u5b58\u5728\u590f\u4ee4\u65f6\u65f6\u95f4\uff0c \u6240\u4ee5\u6b64\u65b9\u6848\u76f8\u5bf9\u4e8e\u76f4\u63a5\u5728\u65f6\u95f4\u6233\u4e0a\u52a0\/\u51cf\u79d2\u6570 \u8981\u66f4\u52a0\u53ef\u9760\u3002<\/p>\n<\/blockquote>\n date()<\/strong><\/span> \u51fd\u6570\u683c\u5f0f\u5316\u7684\u4e00\u4e9b\u793a\u4f8b\u3002 \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5373\u4f7f\u662f\u5bf9\u4e8e\u5f53\u524d\u6765\u8bf4\u5e76\u4e0d\u5177\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\uff0c \u4e5f\u8981\u50cf\u5bf9\u5f85\u5177\u6709\u7279\u6b8a\u542b\u4e49\u7684\u5b57\u7b26\u90a3\u6837\u8fdb\u884c\u8f6c\u4e49\uff0c\u4ee5\u907f\u514d\u51fd\u6570\u8fd4\u56de\u975e\u9884\u671f\u7684\u503c\u3002 \u56e0\u4e3a\u53ef\u80fd\u5728\u5c06\u6765\u7684 PHP \u7248\u672c\u4e2d\uff0c\u8fd9\u4e9b\u5b57\u7b26\u4f1a\u88ab\u8d4b\u4e88\u7279\u6b8a\u7684\u542b\u4e49\u3002 \u8fdb\u884c\u8f6c\u4e49\u7684\u65f6\u5019\uff0c\u8bf7\u786e\u4fdd\u4f7f\u7528\u5355\u5f15\u53f7\uff0c\u4ee5\u907f\u514d \\n \u88ab\u89e3\u91ca\u4e3a\u6362\u884c\u7b26\u53f7\u3002<\/p>\n\nExample #8 date()<\/span> \u51fd\u6570\u683c\u5f0f\u5316<\/strong><\/p>\n\n<?php \n\/\/\u00a0\u5047\u8bbe\u4eca\u5929\u662f\u00a02001\u00a0\u5e74\u00a03\u00a0\u6708\u00a010\u00a0\u65e5\u4e0b\u5348\u00a05\u00a0\u70b9\u00a016\u00a0\u5206\u00a018\u00a0\u79d2\uff0c \n\/\/\u00a0\u5e76\u4e14\u4f4d\u4e8e\u5c71\u533a\u6807\u51c6\u65f6\u95f4\uff08MST\uff09\u65f6\u533a<\/p>\n$today\u00a0=\u00a0date(\"F\u00a0j,\u00a0Y,\u00a0g:i\u00a0a\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0March\u00a010,\u00a02001,\u00a05:16\u00a0pm \n$today\u00a0=\u00a0date(\"m.d.y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a003.10.01 \n$today\u00a0=\u00a0date(\"j,\u00a0n,\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a010,\u00a03,\u00a02001 \n$today\u00a0=\u00a0date(\"Ymd\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a020010310 \n$today\u00a0=\u00a0date('h-i-s,\u00a0j-m-y,\u00a0it\u00a0is\u00a0w\u00a0Day');\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a005-16-18,\u00a010-03-01,\u00a01631\u00a01618\u00a06\u00a0Satpm01 \n$today\u00a0=\u00a0date('\\i\\t\u00a0\\i\\s\u00a0\\t\\h\\e\u00a0jS\u00a0\\d\\a\\y.');\u00a0\u00a0\u00a0\/\/\u00a0it\u00a0is\u00a0the\u00a010th\u00a0day. \n$today\u00a0=\u00a0date(\"D\u00a0M\u00a0j\u00a0G:i:s\u00a0T\u00a0Y\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0Sat\u00a0Mar\u00a010\u00a017:16:18\u00a0MST\u00a02001 \n$today\u00a0=\u00a0date('H:m:s\u00a0\\m\u00a0\\i\\s\\\u00a0\\m\\o\\n\\t\\h');\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:03:18\u00a0m\u00a0is\u00a0month \n$today\u00a0=\u00a0date(\"H:i:s\");\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a017:16:18 \n?><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\u5982\u679c\u9700\u8981\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u5316\u4e3a\u5176\u4ed6\u8bed\u8a00\uff0c\u4f60\u5e94\u8be5\u4f7f\u7528 setlocale()<\/a><\/span> \u548c strftime()<\/a><\/span> \u51fd\u6570 \u6765\u66ff\u4ee3 date()<\/strong><\/span> \u51fd\u6570\u3002<\/p>\n<\/div>\n \n\u6ce8\u91ca<\/h3>\nNote<\/strong>:<\/p>\n\u4f7f\u7528 strtotime()<\/a><\/span> \u51fd\u6570\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8868\u8fbe\u7684\u65e5\u671f\u65f6\u95f4\u8f6c\u6362\u4e3a\u65f6\u95f4\u6233\u3002 \u53e6\u5916\uff0c\u4e00\u4e9b\u6570\u636e\u5e93\u4ea7\u54c1\u4e5f\u63d0\u4f9b\u4e86\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u65f6\u95f4\u6233\u7684\u51fd\u6570\u3002 \uff08\u4f8b\u5982 MySQL \u4e2d\u7684 \u00bb\u00a0UNIX_TIMESTAMP<\/a> \u51fd\u6570\uff09\u3002<\/p>\n<\/blockquote>\n Tip<\/strong><\/p>\n\u4ece PHP 5.1 \u7248\u672c\u5f00\u59cb\uff0c\u8bf7\u6c42\u7684\u5f00\u59cb\u65f6\u95f4\u53ef\u4ee5\u4ece\u53d8\u91cf$_SERVER[‘REQUEST_TIME’]<\/a><\/var> \u4e2d\u83b7\u53d6\u3002<\/p>\n<\/div>\n<\/div>\n \n\u53c2\u89c1<\/h3>\n\ngmdate()<\/a> – \u683c\u5f0f\u5316\u4e00\u4e2a GMT\/UTC \u65e5\u671f\uff0f\u65f6\u95f4<\/span><\/li>\n idate()<\/a> – \u5c06\u672c\u5730\u65f6\u95f4\u65e5\u671f\u683c\u5f0f\u5316\u4e3a\u6574\u6570<\/span><\/li>\n getdate()<\/a> – \u53d6\u5f97\u65e5\u671f\uff0f\u65f6\u95f4\u4fe1\u606f<\/span><\/li>\n getlastmod()<\/a> – \u83b7\u53d6\u9875\u9762\u6700\u540e\u4fee\u6539\u7684\u65f6\u95f4<\/span><\/li>\n mktime()<\/a> – \u53d6\u5f97\u4e00\u4e2a\u65e5\u671f\u7684 Unix \u65f6\u95f4\u6233<\/span><\/li>\n strftime()<\/a> – \u6839\u636e\u533a\u57df\u8bbe\u7f6e\u683c\u5f0f\u5316\u672c\u5730\u65f6\u95f4\uff0f\u65e5\u671f<\/span><\/li>\n time()<\/a> – \u8fd4\u56de\u5f53\u524d\u7684 Unix \u65f6\u95f4\u6233<\/span><\/li>\n strtotime()<\/a> – \u5c06\u4efb\u4f55\u82f1\u6587\u6587\u672c\u7684\u65e5\u671f\u65f6\u95f4\u63cf\u8ff0\u89e3\u6790\u4e3a Unix \u65f6\u95f4\u6233<\/span><\/li>\n \u9884\u5b9a\u4e49\u7684\u65e5\u671f\u65f6\u95f4\u5e38\u91cf<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n add a note<\/small><\/a><\/span><\/p>\nUser Contributed Notes 43 notes<\/span><\/h3>\n<\/div>\n\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n77<\/div>\n<\/div>\nJimmy<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nThings to be aware of when using week numbers with years.<\/p>\n<?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-07\"<\/span>)); <\/span>\/\/ gives 201101 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-12-31\"<\/span>)); <\/span>\/\/ gives 201152 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-01\"<\/span>)); <\/span>\/\/ gives 201152 too \n<\/span>?> \n<\/span> \nBUT<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"oW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-07\"<\/span>)); <\/span>\/\/ gives 201101 \n<\/span>echo <\/span>date<\/span>(<\/span>\"oW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-12-31\"<\/span>)); <\/span>\/\/ gives 201152 \n<\/span>echo <\/span>date<\/span>(<\/span>\"oW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-01\"<\/span>)); <\/span>\/\/ gives 201052 (Year is different than previous example) \n<\/span>?> \n<\/span> \nReason: \nY is year from the date \no is ISO-8601 year number \nW is ISO-8601 week number of year<\/p>\n Conclusion: \nif using 'W' for the week number use 'o' for the year.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n9<\/div>\n<\/div>\nivijan dot stefan at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 months ago<\/strong><\/div>\n\nIf you have a problem with the different time zone, this is the solution for that. \n<?php \n<\/span>\/\/ first line of PHP \n<\/span>$defaultTimeZone<\/span>=<\/span>'UTC'<\/span>; \nif(<\/span>date_default_timezone_get<\/span>()!=<\/span>$defaultTimeZone<\/span>))<\/span>date_default_timezone_set<\/span>(<\/span>$defaultTimeZone<\/span>);<\/p>\n<\/span>\/\/ somewhere in the code \n<\/span>function <\/span>_date<\/span>(<\/span>$format<\/span>=<\/span>\"r\"<\/span>, <\/span>$timestamp<\/span>=<\/span>false<\/span>, <\/span>$timezone<\/span>=<\/span>false<\/span>) \n{ \n<\/span>$userTimezone <\/span>= new <\/span>DateTimeZone<\/span>(!empty(<\/span>$timezone<\/span>) ? <\/span>$timezone<\/span>: <\/span>'GMT'<\/span>); \n<\/span>$gmtTimezone <\/span>= new <\/span>DateTimeZone<\/span>(<\/span>'GMT'<\/span>); \n<\/span>$myDateTime <\/span>= new <\/span>DateTime<\/span>((<\/span>$timestamp<\/span>!=<\/span>false<\/span>?<\/span>date<\/span>(<\/span>\"r\"<\/span>,(int)<\/span>$timestamp<\/span>):<\/span>date<\/span>(<\/span>\"r\"<\/span>)), <\/span>$gmtTimezone<\/span>); \n<\/span>$offset <\/span>= <\/span>$userTimezone<\/span>-><\/span>getOffset<\/span>(<\/span>$myDateTime<\/span>); \nreturn <\/span>date<\/span>(<\/span>$format<\/span>, (<\/span>$timestamp<\/span>!=<\/span>false<\/span>?(int)<\/span>$timestamp<\/span>:<\/span>$myDateTime<\/span>-><\/span>format<\/span>(<\/span>'U'<\/span>)) + <\/span>$offset<\/span>); \n}<\/p>\n <\/span>\/* Example *\/ \n<\/span>echo <\/span>'System Date\/Time: '<\/span>.<\/span>date<\/span>(<\/span>\"Y-m-d | h:i:sa\"<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>'New York Date\/Time: '<\/span>.<\/span>_date<\/span>(<\/span>\"Y-m-d | h:i:sa\"<\/span>, <\/span>false<\/span>,<\/span>'America\/New_York'<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>'Belgrade Date\/Time: '<\/span>.<\/span>_date<\/span>(<\/span>\"Y-m-d | h:i:sa\"<\/span>, <\/span>false<\/span>,<\/span>'Europe\/Belgrade'<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>'Belgrade Date\/Time: '<\/span>.<\/span>_date<\/span>(<\/span>\"Y-m-d | h:i:sa\"<\/span>, <\/span>514640700<\/span>,<\/span>'Europe\/Belgrade'<\/span>).<\/span>'<br>'<\/span>; \n<\/span>?> \n<\/span>This is the best and fastest solution for this problem. Working almost identical to date() function only as a supplement has the time zone option.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n11<\/div>\n<\/div>\nadityabhai at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nFor Microseconds, we can get by following:<\/p>\necho date('Ymd His'.substr((string)microtime(), 1, 8).' e');<\/p>\n Thought, it might be useful to someone !<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n10<\/div>\n<\/div>\nbakerj417 at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nIf you are having an issue getting u to work so is everyone else. The solution that I am using which I found on another site(so not taking credit) is to use this:<\/p>\ndate(\"Y\/m\/d H:i:s\"). substr((string)microtime(), 1, 6);<\/p>\n that will give you:<\/p>\n yyyy\/mm\/dd hh:ii:ss.uuuuuu<\/p>\n hope this helps someone in need!<\/p>\n thanks all<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n7<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nIt's common for us to overthink the complexity of date\/time calculations and underthink the power and flexibility of PHP's built-in functions.\u00a0 Considerhttp:\/\/php.net\/manual\/en\/function.date.php#108613<\/a><\/p>\n<?php \n<\/span>function <\/span>get_time_string<\/span>(<\/span>$seconds<\/span>) \n{ \nreturn <\/span>date<\/span>(<\/span>'H:i:s'<\/span>, <\/span>strtotime<\/span>(<\/span>\"2000-01-01 + <\/span>$seconds<\/span>SECONDS\"<\/span>)); \n}<\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n8<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 6 years ago<\/strong><\/div>\n\nCorrect format for a MySQL DATETIME column is \n<?php $mysqltime <\/span>= <\/span>date <\/span>(<\/span>\"Y-m-d H:i:s\"<\/span>, <\/span>$phptime<\/span>); <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n8<\/div>\n<\/div>\nFiraSEO<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nthis how you make an HTML5 <time> tag correctly<\/p>\n<?php<\/p>\n <\/span>echo <\/span>'<time datetime=\"'<\/span>.<\/span>date<\/span>(<\/span>'c'<\/span>).<\/span>'\">'<\/span>.<\/span>date<\/span>(<\/span>'Y - m - d'<\/span>).<\/span>'<\/time>'<\/span>;<\/p>\n <\/span>?> \n<\/span> \nin the \"datetime\" attribute you should put a machine-readable value which represent time , the best value is a full time\/date with ISO 8601 ( date('c') ) ,,, the attr will be hidden from users<\/p>\n and it doesn't really matter what you put as a shown value to the user,, any date\/time format is okay !<\/p>\n This is very good for SEO especially search engines like Google .<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n2<\/div>\n<\/div>\njock<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 11 months ago<\/strong><\/div>\n\nAs of PHP 5.3.3, date('c') will produce a string like this:<\/p>\n2014-06-17T16:22:42+02:00<\/p>\n Instead date (DATE_ISO8601) will produce:<\/p>\n 2014-06-17T16:23:36+0200<\/p>\n which lacks the semicolon in the timezone part. Both are ISO8601 compliant anyway, but I found that the latter has better compatibility with other languages like python.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n4<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nTo quickly convert date(\"N\") to a 0 based index with Sunday being represented as 0, you can run it against modulus 7:<\/p>\n<?php \n$first_of_month_index <\/span>= <\/span>date<\/span>(<\/span>'N'<\/span>, <\/span>strtotime<\/span>(<\/span>'4\/1\/1990'<\/span>)) % <\/span>7<\/span>; \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nTim Connolly<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nHere's my solution for looking up the month number by name (used when parsing an 'ls'):<\/p>\n<?php \n<\/span>for(<\/span>$m<\/span>=<\/span>1<\/span>;<\/span>$m<\/span><=<\/span>12<\/span>;<\/span>$m<\/span>++){ \n<\/span>$month<\/span>=<\/span>date<\/span>(<\/span>\"M\"<\/span>,<\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>$m<\/span>,<\/span>1<\/span>,<\/span>2000<\/span>)); \n<\/span>$mon<\/span>[<\/span>\"<\/span>$month<\/span>\"<\/span>]=<\/span>$m<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nLeopietroni<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nThis function will add working day to a given timestamp<\/p>\n<?php \n<\/span>function <\/span>addworkinday<\/span>(<\/span>$timestamp<\/span>,<\/span>$daystoadd<\/span>){<\/p>\n <\/span>$dayoftheweek <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>,<\/span>$timestamp<\/span>); \n<\/span>$sum <\/span>=<\/span>$dayoftheweek <\/span>+<\/span>$daystoadd<\/span>;<\/p>\n while (<\/span>$sum <\/span>>= <\/span>6<\/span>) {<\/p>\n <\/span>$daystoadd<\/span>=<\/span>$daystoadd<\/span>+<\/span>1<\/span>; \n<\/span>$sum<\/span>=<\/span>$sum<\/span>-<\/span>1<\/span>; \n} \nreturn <\/span>$timestamp <\/span>+(<\/span>60<\/span>*<\/span>60<\/span>*<\/span>24<\/span>*<\/span>$daystoadd<\/span>);<\/p>\n } \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nwebmaster1989 at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nSometimes it is very useful to convert a sql timestamp to an also called NTP time. This is often used as time date notation in XML RSS pages. To convert a timestamp to this NTP notation try the following:<\/p>\n<?php \n<\/span>echo <\/span>date<\/span>(<\/span>'D, d M Y h:i:s O'<\/span>, <\/span>strtotime <\/span>(<\/span>$timestamp<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nnathan<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\n<?php \n<\/span>\/* the following variables are set to appropriate \ncharacters recognized by php version 5 that \nwill get the date. To display the date, we have \nto use 'echo' or 'print' to send the variable \ndata to the browser \n*\/<\/p>\n<\/span>$day<\/span>=<\/span>date<\/span>(<\/span>\"l\"<\/span>); \n<\/span>$date<\/span>=<\/span>date<\/span>(<\/span>\"j\"<\/span>); \n<\/span>$suffix<\/span>=<\/span>date<\/span>(<\/span>\"S\"<\/span>); \n<\/span>$month<\/span>=<\/span>date<\/span>(<\/span>\"F\"<\/span>); \n<\/span>$year<\/span>=<\/span>date<\/span>(<\/span>\"Y\"<\/span>); \necho <\/span>$day <\/span>. <\/span>\", \" <\/span>. <\/span>$month <\/span>. <\/span>\" \" <\/span>. <\/span>$date <\/span>. <\/span>$suffix <\/span>. <\/span>\", \" <\/span>. <\/span>$year<\/span>; \n<\/span>?> \n<\/span> \nrudimentary, simple way to due things, but it gets the job done for someone learning more on the subject.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n3<\/div>\n<\/div>\nBas Vijfwinkel<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nNote that some formatting options are different from MySQL. \nFor example using a 24 hour notation without leading zeros is the option '%G' in PHP but '%k' in MySQL. \nWhen using dynamically generated date formatting string, be careful to generate the correct options for either PHP or MySQL.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\ndavid dot leon at gmx dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\n<?php \n<\/span>\/\/date returns microseconds. \n<\/span>function <\/span>mdate<\/span>(<\/span>$format<\/span>, <\/span>$microtime <\/span>= <\/span>null<\/span>) { \n<\/span>$microtime <\/span>= <\/span>explode<\/span>(<\/span>' '<\/span>, (<\/span>$microtime <\/span>? <\/span>$microtime <\/span>:<\/span>microtime<\/span>())); \nif (<\/span>count<\/span>(<\/span>$microtime<\/span>) != <\/span>2<\/span>) return <\/span>false<\/span>; \n<\/span>$microtime<\/span>[<\/span>0<\/span>] = <\/span>$microtime<\/span>[<\/span>0<\/span>] * <\/span>1000000<\/span>; \n<\/span>$format <\/span>= <\/span>str_replace<\/span>(<\/span>'u'<\/span>, <\/span>$microtime<\/span>[<\/span>0<\/span>], <\/span>$format<\/span>); \nreturn <\/span>date<\/span>(<\/span>$format<\/span>, <\/span>$microtime<\/span>[<\/span>1<\/span>]); \n} \n<\/span>?> \n<\/span> \necho mdate('Y-m-d H:i:s.u');<\/p>\n2014-05-19 12:41:59.202303<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n3<\/div>\n<\/div>\neduardo at digmotor dot com dot br<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 6 years ago<\/strong><\/div>\n\nThanks to tcasparr at gmail dot com for the great idea (at least for me) ;) \nI changed the code a little to replicate the functionality of date_parse_from_format, once I don't have PHP 5.3.0 yet. This might be useful for someone. Hope you don't mind changing your code tcasparr at gmail dot com.<\/p>\n<?php \n<\/span>\/******************************************************* \n* Simple function to take in a date format and return array of associated \n* formats for each date element \n* \n* @return array \n* @param string $strFormat \n* \n* Example: Y\/m\/d g:i:s becomes \n* Array \n* ( \n*\u00a0 \u00a0\u00a0 [year] => Y \n*\u00a0 \u00a0\u00a0 [month] => m \n*\u00a0 \u00a0\u00a0 [day] => d \n*\u00a0 \u00a0\u00a0 [hour] => g \n*\u00a0 \u00a0\u00a0 [minute] => i \n*\u00a0 \u00a0\u00a0 [second] => s \n* ) \n* \n*\u00a0 This function is needed for\u00a0 PHP < 5.3.0 \n********************************************************\/ \n<\/span>function <\/span>dateParseFromFormat<\/span>(<\/span>$stFormat<\/span>, <\/span>$stData<\/span>) \n{ \n<\/span>$aDataRet <\/span>= array(); \n<\/span>$aPieces <\/span>= <\/span>split<\/span>(<\/span>'[:\/.\\ \\-]'<\/span>, <\/span>$stFormat<\/span>); \n<\/span>$aDatePart <\/span>= <\/span>split<\/span>(<\/span>'[:\/.\\ \\-]'<\/span>, <\/span>$stData<\/span>); \nforeach(<\/span>$aPieces <\/span>as <\/span>$key<\/span>=><\/span>$chPiece<\/span>) \n{ \nswitch (<\/span>$chPiece<\/span>) \n{ \ncase <\/span>'d'<\/span>: \ncase <\/span>'j'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'day'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'F'<\/span>: \ncase <\/span>'M'<\/span>: \ncase <\/span>'m'<\/span>: \ncase <\/span>'n'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'month'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'o'<\/span>: \ncase <\/span>'Y'<\/span>: \ncase <\/span>'y'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'year'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'g'<\/span>: \ncase <\/span>'G'<\/span>: \ncase <\/span>'h'<\/span>: \ncase <\/span>'H'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'hour'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'i'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'minute'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak;<\/p>\n case <\/span>'s'<\/span>: \n<\/span>$aDataRet<\/span>[<\/span>'second'<\/span>] = <\/span>$aDatePart<\/span>[<\/span>$key<\/span>]; \nbreak; \n}<\/p>\n } \nreturn <\/span>$aDataRet<\/span>; \n} \n<\/span>?> \n<\/span> \nAlso, if you need to change the format of dates:<\/p>\n <?php \n<\/span>function <\/span>changeDateFormat<\/span>(<\/span>$stDate<\/span>,<\/span>$stFormatFrom<\/span>,<\/span>$stFormatTo<\/span>) \n{ \n<\/span>\/\/ When PHP 5.3.0 becomes available to me \n\/\/$date = date_parse_from_format($stFormatFrom,$stDate); \n\/\/For now I use the function above \n<\/span>$date <\/span>= <\/span>dateParseFromFormat<\/span>(<\/span>$stFormatFrom<\/span>,<\/span>$stDate<\/span>); \nreturn <\/span>date<\/span>(<\/span>$stFormatTo<\/span>,<\/span>mktime<\/span>(<\/span>$date<\/span>[<\/span>'hour'<\/span>], \n<\/span>$date<\/span>[<\/span>'minute'<\/span>], \n<\/span>$date<\/span>[<\/span>'second'<\/span>], \n<\/span>$date<\/span>[<\/span>'month'<\/span>], \n<\/span>$date<\/span>[<\/span>'day'<\/span>], \n<\/span>$date<\/span>[<\/span>'year'<\/span>])); \n}<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nmel dot boyce at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 9 years ago<\/strong><\/div>\n\nI've been flicking through the comments looking for some succinct date code and have noticed an alarming number of questions and over-burdened examples related to date mathematics. One of the most useful skills you can utilize when performing date math is taking full advantage of the UNIX timestamp. The UNIX timestamp was built for this kind of work.<\/p>\nAn example of this relates to a comment made by james at bandit-dot-co-dot-en-zed. James was looking for a way to calculate the number of days which have passed since a certain date. Rather than using mktime() and a loop, James can subtract the current timestamp from the timestamp of the date in question and divide that by the number of seconds in a day: \n<?php \n$days <\/span>= <\/span>floor<\/span>((<\/span>time<\/span>() - <\/span>strtotime<\/span>(<\/span>\"01-Jan-2006\"<\/span>))\/<\/span>86400<\/span>); \nprint(<\/span>\"<\/span>$days<\/span> days have passed.\\n\"<\/span>); \n<\/span>?> \n<\/span> \nAnother usage could find itself in a class submitted by Kyle M Hall which aids in the creation of timestamps from the recent past for use with MySQL. Rather than the looping and fine tuning of a date, Kyle can use the raw UNIX timestamps (this is untested code): \n<?php \n$ago <\/span>= <\/span>14<\/span>; <\/span>\/\/ days \n<\/span>$timestamp <\/span>= <\/span>time<\/span>() - (<\/span>$ago <\/span>* <\/span>86400<\/span>); \n<\/span>?> \n<\/span> \nHopefully these two examples of \"UNIX-style\" timestamp usage will help those finding date mathematics more elusive than it should be.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n5<\/div>\n<\/div>\nSpikeDaCruz<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 9 years ago<\/strong><\/div>\n\nThe following function will return the date (on the Gregorian calendar) for Orthodox Easter (Pascha).\u00a0 Note that incorrect results will be returned for years less than 1601 or greater than 2399. This is because the Julian calendar (from which the Easter date is calculated) deviates from the Gregorian by one day for each century-year that is NOT a leap-year, i.e. the century is divisible by 4 but not by 10.\u00a0 (In the old Julian reckoning, EVERY 4th year was a leap-year.)<\/p>\nThis algorithm was first proposed by the mathematician\/physicist Gauss.\u00a0 Its complexity derives from the fact that the calculation is based on a combination of solar and lunar calendars.<\/p>\n <?php \n<\/span>function <\/span>getOrthodoxEaster<\/span>(<\/span>$date<\/span>){ \n<\/span>\/* \nTakes any Gregorian date and returns the Gregorian \ndate of Orthodox Easter for that year. \n*\/ \n<\/span>$year <\/span>= <\/span>date<\/span>(<\/span>\"Y\"<\/span>, <\/span>$date<\/span>); \n<\/span>$r1 <\/span>= <\/span>$year <\/span>% <\/span>19<\/span>; \n<\/span>$r2 <\/span>= <\/span>$year <\/span>% <\/span>4<\/span>; \n<\/span>$r3 <\/span>= <\/span>$year <\/span>% <\/span>7<\/span>; \n<\/span>$ra <\/span>= <\/span>19 <\/span>* <\/span>$r1 <\/span>+ <\/span>16<\/span>; \n<\/span>$r4 <\/span>= <\/span>$ra <\/span>% <\/span>30<\/span>; \n<\/span>$rb <\/span>= <\/span>2 <\/span>* <\/span>$r2 <\/span>+ <\/span>4 <\/span>* <\/span>$r3 <\/span>+ <\/span>6 <\/span>* <\/span>$r4<\/span>; \n<\/span>$r5 <\/span>= <\/span>$rb <\/span>% <\/span>7<\/span>; \n<\/span>$rc <\/span>= <\/span>$r4 <\/span>+ <\/span>$r5<\/span>; \n<\/span>\/\/Orthodox Easter for this year will fall $rc days after April 3 \n<\/span>return <\/span>strtotime<\/span>(<\/span>\"3 April <\/span>$year<\/span> + <\/span>$rc<\/span> days\"<\/span>); \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n4<\/div>\n<\/div>\nghotinet<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 4 years ago<\/strong><\/div>\n\nMost spreadsheet programs have a rather nice little built-in function called NETWORKDAYS to calculate the number of business days (i.e. Monday-Friday, excluding holidays) between any two given dates. I couldn't find a simple way to do that in PHP, so I threw this together. It replicates the functionality of OpenOffice's NETWORKDAYS function - you give it a start date, an end date, and an array of any holidays you want skipped, and it'll tell you the number of business days (inclusive of the start and end days!) between them.<\/p>\nI've tested it pretty strenuously but date arithmetic is complicated and there's always the possibility I missed something, so please feel free to check my math.<\/p>\n The function could certainly be made much more powerful, to allow you to set different days to be ignored (e.g. \"skip all Fridays and Saturdays but include Sundays\") or to set up dates that should always be skipped (e.g. \"skip July 4th in any year, skip the first Monday in September in any year\"). But that's a project for another time.<\/p>\n <?php<\/p>\n <\/span>function <\/span>networkdays<\/span>(<\/span>$s<\/span>, <\/span>$e<\/span>, <\/span>$holidays <\/span>= array()) { \n<\/span>\/\/ If the start and end dates are given in the wrong order, flip them. \n<\/span>if (<\/span>$s <\/span>> <\/span>$e<\/span>) \nreturn <\/span>networkdays<\/span>(<\/span>$e<\/span>, <\/span>$s<\/span>, <\/span>$holidays<\/span>);<\/p>\n <\/span>\/\/ Find the ISO-8601 day of the week for the two dates. \n<\/span>$sd <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$s<\/span>); \n<\/span>$ed <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$e<\/span>);<\/p>\n <\/span>\/\/ Find the number of weeks between the dates. \n<\/span>$w <\/span>= <\/span>floor<\/span>((<\/span>$e <\/span>- <\/span>$s<\/span>)\/(<\/span>86400<\/span>*<\/span>7<\/span>));\u00a0 \u00a0 <\/span># Divide the difference in the two times by seven days to get the number of weeks. \n<\/span>if (<\/span>$ed <\/span>>= <\/span>$sd<\/span>) { <\/span>$w<\/span>--; }\u00a0 \u00a0 \u00a0 \u00a0 <\/span># If the end date falls on the same day of the week or a later day of the week than the start date, subtract a week.<\/p>\n \/\/ Calculate net working days. \n<\/span>$nwd <\/span>= <\/span>max<\/span>(<\/span>6 <\/span>- <\/span>$sd<\/span>, <\/span>0<\/span>);\u00a0 \u00a0 <\/span># If the start day is Saturday or Sunday, add zero, otherewise add six minus the weekday number. \n<\/span>$nwd <\/span>+= <\/span>min<\/span>(<\/span>$ed<\/span>, <\/span>5<\/span>);\u00a0 \u00a0 <\/span># If the end day is Saturday or Sunday, add five, otherwise add the weekday number. \n<\/span>$nwd <\/span>+= <\/span>$w <\/span>* <\/span>5<\/span>;\u00a0 \u00a0 \u00a0 \u00a0 <\/span># Add five days for each week in between.<\/p>\n \/\/ Iterate through the array of holidays. For each holiday between the start and end dates that isn't a Saturday or a Sunday, remove one day. \n<\/span>foreach (<\/span>$holidays <\/span>as <\/span>$h<\/span>) { \n<\/span>$h <\/span>= <\/span>strtotime<\/span>(<\/span>$h<\/span>); \nif (<\/span>$h <\/span>> <\/span>$s <\/span>&& <\/span>$h <\/span>< <\/span>$e <\/span>&& <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$h<\/span>) < <\/span>6<\/span>) \n<\/span>$nwd<\/span>--; \n}<\/p>\n return <\/span>$nwd<\/span>; \n}<\/p>\n <\/span>$start <\/span>= <\/span>strtotime<\/span>(<\/span>\"1 January 2010\"<\/span>); \n<\/span>$end <\/span>= <\/span>strtotime<\/span>(<\/span>\"13 December 2010\"<\/span>);<\/p>\n <\/span>\/\/ Add as many holidays as desired. \n<\/span>$holidays <\/span>= array(); \n<\/span>$holidays<\/span>[] = <\/span>\"4 July 2010\"<\/span>;\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <\/span>\/\/ Falls on a Sunday; doesn't affect count \n<\/span>$holidays<\/span>[] = <\/span>\"6 September 2010\"<\/span>;\u00a0 \u00a0 \u00a0 \u00a0 <\/span>\/\/ Falls on a Monday; reduces count by one<\/p>\n <\/span>echo <\/span>networkdays<\/span>(<\/span>$start<\/span>, <\/span>$end<\/span>, <\/span>$holidays<\/span>);\u00a0 \u00a0 <\/span>\/\/ Returns 246<\/p>\n <\/span>?> \n<\/span> \nOr, if you just want to know how many work days there are in any given year, here's a quick function for that one:<\/p>\n <?php<\/p>\n <\/span>function <\/span>workdaysinyear<\/span>(<\/span>$y<\/span>) { \n<\/span>$j1 <\/span>= <\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>1<\/span>,<\/span>1<\/span>,<\/span>$y<\/span>); \nif (<\/span>date<\/span>(<\/span>\"L\"<\/span>, <\/span>$j1<\/span>)) { \nif (<\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>6<\/span>) \nreturn <\/span>260<\/span>; \nelseif (<\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>5 <\/span>or <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>7<\/span>) \nreturn <\/span>261<\/span>; \nelse \nreturn <\/span>262<\/span>; \n} \nelse { \nif (<\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>6 <\/span>or <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$j1<\/span>) == <\/span>7<\/span>) \nreturn <\/span>260<\/span>; \nelse \nreturn <\/span>261<\/span>; \n} \n}<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n2<\/div>\n<\/div>\ngerben at gerbenwijnja dot nl<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nI use the function below to calculate the Unix timestamp of the start of a week. It includes a boolean flag to request a GMT offset instead of the current locale setting.<\/p>\n<?php<\/p>\n <\/span>function <\/span>getWeekOffsetTimestamp<\/span>(<\/span>$year<\/span>, <\/span>$week<\/span>, <\/span>$useGmt <\/span>= <\/span>false<\/span>) { \nif (<\/span>$useGmt<\/span>) { \n<\/span>\/\/ Backup timezone and set to GMT \n<\/span>$timezoneSettingBackup <\/span>=<\/span>date_default_timezone_get<\/span>(); \n<\/span>date_default_timezone_set<\/span>(<\/span>\"GMT\"<\/span>); \n}<\/p>\n <\/span>\/\/ According to ISO-8601, January 4th is always in week 1 \n<\/span>$halfwayTheWeek <\/span>= <\/span>strtotime<\/span>(<\/span>$year<\/span>.<\/span>\"0104 +\"<\/span>.(<\/span>$week <\/span>- <\/span>1<\/span>).<\/span>\" weeks\"<\/span>);<\/p>\n <\/span>\/\/ Subtract days to Monday \n<\/span>$dayOfTheWeek <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$halfwayTheWeek<\/span>); \n<\/span>$daysToSubtract <\/span>= <\/span>$dayOfTheWeek <\/span>- <\/span>1<\/span>;<\/p>\n <\/span>\/\/ Calculate the week's timestamp \n<\/span>$unixTimestamp <\/span>= <\/span>strtotime<\/span>(<\/span>\"-<\/span>$daysToSubtract<\/span> day\"<\/span>,<\/span>$halfwayTheWeek<\/span>);<\/p>\n if (<\/span>$useGmt<\/span>) { \n<\/span>\/\/ Reset timezone to backup \n<\/span>date_default_timezone_set<\/span>(<\/span>$timezoneSettingBackup<\/span>); \n}<\/p>\n return <\/span>$unixTimestamp<\/span>; \n}<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\nmatthew dot hotchen at worldfirst dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nFYI: there's a list of constants with predefined formats on the DateTime object, for example instead of outputting ISO 8601 dates with:<\/p>\n<?php \n<\/span>echo <\/span>date<\/span>(<\/span>'c'<\/span>); \n<\/span>?> \n<\/span> \nor<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>'Y-m-d\\TH:i:sO'<\/span>); \n<\/span>?> \n<\/span> \nYou can use<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>DateTime<\/span>::<\/span>ISO8601<\/span>); \n<\/span>?> \n<\/span> \ninstead, which is much easier to read.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\n@PeteWilliams<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 4 years ago<\/strong><\/div>\n\nIf you want to use HTML5's <date> tag, the following code will generate the machine-readable value for the 'datetime' attribute:<\/p>\n<?php<\/p>\n <\/span>\/** \n* formats the date passed into format required by 'datetime' attribute of <date> tag \n* if no intDate supplied, uses current date. \n* @param intDate integer optional \n* @return string \n**\/ \n<\/span>function <\/span>getDateTimeValue<\/span>( <\/span>$intDate <\/span>= <\/span>null <\/span>) {<\/p>\n <\/span>$strFormat <\/span>= <\/span>'Y-m-d\\TH:i:s.uP'<\/span>; \n<\/span>$strDate <\/span>= <\/span>$intDate <\/span>? <\/span>date<\/span>( <\/span>$strFormat<\/span>, <\/span>$intDate <\/span>) : <\/span>date<\/span>(<\/span>$strFormat <\/span>) ;<\/p>\n return <\/span>$strDate<\/span>; \n}<\/p>\n echo <\/span>getDateTimeValue<\/span>();<\/p>\n <\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n2<\/div>\n<\/div>\nEdward Rudd<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 5 years ago<\/strong><\/div>\n\nTo actually make use ot the \"u\" (microsecond) you need to use the DateTime object and not the date() function.<\/p>\nFor example<\/p>\n <?php \n$t <\/span>= <\/span>microtime<\/span>(<\/span>true<\/span>); \n<\/span>$micro <\/span>= <\/span>sprintf<\/span>(<\/span>\"%06d\"<\/span>,(<\/span>$t <\/span>- <\/span>floor<\/span>(<\/span>$t<\/span>)) * <\/span>1000000<\/span>); \n<\/span>$d <\/span>= new <\/span>DateTime<\/span>( <\/span>date<\/span>(<\/span>'Y-m-d H:i:s.'<\/span>.<\/span>$micro<\/span>,<\/span>$t<\/span>) );<\/p>\n print <\/span>$d<\/span>-><\/span>format<\/span>(<\/span>\"Y-m-d H:i:s.u\"<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n1<\/div>\n<\/div>\nJonathanCross.com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 6 years ago<\/strong><\/div>\n\n<?php \n<\/span>\/\/ A demonstration of the new DateTime class for those \n\/\/ trying to use dates before 1970 or after 2038. \n<\/span>?> \n<\/span><h2>PHP 2038 date bug demo (php version <?php <\/span>echo <\/span>phpversion<\/span>(); <\/span>?><\/span>)<\/h1> \n<div style='float:left;margin-right:3em;'> \n<h3>OLD Buggy date()<\/h3> \n<?php \n$format<\/span>=<\/span>'F j, Y'<\/span>; \nfor ( <\/span>$i <\/span>= <\/span>1900<\/span>; <\/span>$i <\/span>< <\/span>2050<\/span>; <\/span>$i<\/span>++) { \n<\/span>$datep <\/span>= <\/span>\"<\/span>$i<\/span>-01-01\"<\/span>; \n<\/span>?> \n<\/span>\u00a0 \u00a0 Trying: <?php <\/span>echo <\/span>$datep<\/span>; <\/span>?><\/span> = <?php <\/span>echo <\/span>date<\/span>(<\/span>$format<\/span>,<\/span>strtotime<\/span>(<\/span>$datep<\/span>)); <\/span>?><\/span><br> \n<?php \n<\/span>} \n<\/span>?><\/span><\/div> \n<div style='float:left;'> \n<h3>NEW DateTime Class (v 5.2+)<\/h3><?php \n<\/span>for ( <\/span>$i <\/span>= <\/span>1900<\/span>; <\/span>$i <\/span>< <\/span>2050<\/span>; <\/span>$i<\/span>++) { \n<\/span>$datep <\/span>= <\/span>\"<\/span>$i<\/span>-01-01\"<\/span>; \n<\/span>$date <\/span>= new <\/span>DateTime<\/span>(<\/span>$datep<\/span>); \n<\/span>?> \n<\/span>\u00a0 \u00a0 Trying: <?php <\/span>echo <\/span>$datep<\/span>; <\/span>?><\/span> = <?php <\/span>echo <\/span>$date<\/span>-><\/span>format<\/span>(<\/span>$format<\/span>); <\/span>?><\/span><br> \n<?php \n<\/span>} \n<\/span>?><\/span><\/div><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n0<\/div>\n<\/div>\nlb at bostontech dot net<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 5 years ago<\/strong><\/div>\n\nNot sure why this got ignored the first time, but this is an even simpler way to check leap year:<\/p>\n<?php \n<\/span>function <\/span>isLeapYear<\/span>(<\/span>$year<\/span>) \n{ return (((<\/span>$year<\/span>%<\/span>4<\/span>==<\/span>0<\/span>) && (<\/span>$year<\/span>%<\/span>100<\/span>)) || <\/span>$year<\/span>%<\/span>400<\/span>==<\/span>0<\/span>) ? (<\/span>true<\/span>):(<\/span>false<\/span>); } \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-1<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nWas trying to compare dates when I noticed that:<\/p>\n<?php<\/p>\n var_dump<\/span>(<\/span>date<\/span>(<\/span>'d.m.Y'<\/span>, <\/span>null<\/span>));<\/span>\/\/string(10) \"01.01.1970\" \n<\/span>var_dump<\/span>(<\/span>date<\/span>(<\/span>'d.m.Y'<\/span>, <\/span>''<\/span>));<\/span>\/\/bool(false)<\/p>\n <\/span>?> \n<\/span> \nThought it's worth mentioning. Caused some weird logs to be produced in our system since this does not evaluate to the same.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-2<\/div>\n<\/div>\nm_ocx at yahoo dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nHere is a cool Date class to implement the date function:<\/p>\n<?php \n<\/span>\/* \n* @author\u00a0 \u00a0 Gchats \n* \n* Date class \n*\/ \n<\/span>class <\/span>Date \n<\/span>{ \nprivate <\/span>$shortDateFormat <\/span>= <\/span>\"F j, Y\"<\/span>; \nprivate <\/span>$longDateFormat <\/span>= <\/span>\"F j, Y, g:i a\"<\/span>; \nprivate <\/span>$timestamp <\/span>= <\/span>0<\/span>;<\/p>\n <\/span>\/** \n* Default constructor \n* \n* @param\u00a0 \u00a0 integer\u00a0 \u00a0 \u00a0 \u00a0 $timestamp\u00a0 \u00a0 unix time stamp \n*\/ \n<\/span>function <\/span>__construct<\/span>(<\/span>$timestamp <\/span>= <\/span>0<\/span>) \n{ \n<\/span>$this<\/span>-><\/span>timestamp <\/span>= <\/span>$timestamp<\/span>; \n}<\/p>\n <\/span>\/** \n* Returns the given timestamp in the constructor \n* \n* @return\u00a0 \u00a0 integer\u00a0 \u00a0 \u00a0 \u00a0 time stamp \n*\/ \n<\/span>public function <\/span>getTime<\/span>() \n{ \nreturn (int) <\/span>$this<\/span>-><\/span>timestamp<\/span>; \n}<\/p>\n <\/span>\/* \n* Returns long formatted date of the given timestamp \n* \n* @access public \n* @return\u00a0 \u00a0\u00a0 string\u00a0 \u00a0 Long formatted date \n*\/ \n<\/span>public function <\/span>long<\/span>() \n{ \nif ( <\/span>$this<\/span>-><\/span>timestamp <\/span>> <\/span>0 <\/span>) \n{ \nreturn <\/span>date <\/span>( <\/span>$this<\/span>-><\/span>longDateFormat <\/span>, <\/span>$this<\/span>-><\/span>timestamp<\/span>); \n} \nelse \n{ \nreturn <\/span>\"\"<\/span>; \n} \n}<\/p>\n <\/span>\/* \n* Returns short formatted date of the given timestamp \n* \n* @access public \n* @return\u00a0 \u00a0\u00a0 string\u00a0 \u00a0 Short formatted date \n*\/ \n<\/span>public function <\/span>short<\/span>() \n{ \nif ( <\/span>$this<\/span>-><\/span>timestamp <\/span>> <\/span>0 <\/span>) \n{ \nreturn <\/span>date <\/span>( <\/span>$this<\/span>-><\/span>shortDateFormat <\/span>, <\/span>$this<\/span>-><\/span>timestamp<\/span>); \n} \nelse \n{ \nreturn <\/span>\"\"<\/span>; \n} \n}<\/p>\n public function <\/span>__toString<\/span>() \n{ \nreturn <\/span>$this<\/span>-><\/span>timestamp<\/span>; \n}<\/p>\n } \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-3<\/div>\n<\/div>\njc<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 7 years ago<\/strong><\/div>\n\ndate(\"W\") returns the iso8601 week number, while date(\"Y\") returns the _current_ year. This can lead to odd results. For example today (dec 31, 2007) it returns 1 for the week and of course 2007 for the year. This is not wrong in a strict sense because iso defines this week as the first of 2008 while we still have 2007.<\/p>\nSo, if you don't have another way to safely retrieve the year according to the iso8061 week-date - strftime(\"%G\") doesn't work on some systems -, you should be careful when working with date(\"W\").<\/p>\n For most cases strftime(\"%W\") should be a safe replacement.<\/p>\n[edit: Much easier is to use \"o\" (lower case O) instead of \"Y\"]<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nAnon<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nI needed to convet a duration timestamp into H:i:s but whenever I did it kept bringing 5 back as 01:00:05 (due to some DST stuff) so I made this function to replace date(). It has no optimisations but hopefully someone might find it useful:<\/p>\n<?php \n<\/span>function <\/span>get_time_string<\/span>(){ \n<\/span>$time <\/span>= <\/span>3600<\/span>+(<\/span>60<\/span>*<\/span>32<\/span>)+(<\/span>50<\/span>); <\/span>\/\/ 01:32:50 \n<\/span>$time_string <\/span>= <\/span>''<\/span>;<\/p>\n <\/span>$hours <\/span>= (int)(<\/span>$time<\/span>\/(<\/span>60<\/span>*<\/span>60<\/span>)); \nif(<\/span>strlen<\/span>(<\/span>$hours<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>= <\/span>$hours<\/span>.<\/span>':'<\/span>; \n}else{ \n<\/span>$time_string <\/span>= <\/span>'0'<\/span>.<\/span>$hours<\/span>.<\/span>':'<\/span>; \n}<\/p>\n <\/span>$minutes <\/span>= (int)((<\/span>$time<\/span>%(<\/span>60<\/span>*<\/span>60<\/span>))\/(<\/span>60<\/span>)); \nif(<\/span>$minutes <\/span>>= <\/span>1<\/span>){ \nif(<\/span>strlen<\/span>(<\/span>$minutes<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>.= <\/span>$minutes<\/span>.<\/span>':'<\/span>; \n}else{ \n<\/span>$time_string <\/span>.= <\/span>'0'<\/span>.<\/span>$minutes<\/span>.<\/span>':'<\/span>; \n}<\/p>\n <\/span>$seconds <\/span>= (<\/span>$time<\/span>%(<\/span>60<\/span>*<\/span>60<\/span>))%(<\/span>60<\/span>); \nif(<\/span>strlen<\/span>(<\/span>$seconds<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>.= <\/span>$seconds<\/span>; \n}else{ \n<\/span>$time_string <\/span>.= <\/span>'0'<\/span>.<\/span>$seconds<\/span>; \n} \n}else{ \nif(<\/span>strlen<\/span>(<\/span>$time<\/span>) > <\/span>1<\/span>){ \n<\/span>$time_string <\/span>.= <\/span>'00:'<\/span>.<\/span>$time<\/span>; \n}else{ \n<\/span>$time_string <\/span>.= <\/span>'00:0'<\/span>.<\/span>$time<\/span>; \n} \n} \nreturn <\/span>$time_string<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-3<\/div>\n<\/div>\nJust.Kevin<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 5 years ago<\/strong><\/div>\n\nIn order to determine if a year is a leap year an earlier poster suggested simply checking to see if the year is a multiple of four:<\/p>\n<?php \n<\/span>function <\/span>is_leapyear_broken<\/span>(<\/span>$year <\/span>= <\/span>2004<\/span>) { \nreturn (<\/span>$year<\/span>%<\/span>4<\/span>)==<\/span>0<\/span>; \n} \n<\/span>?> \n<\/span> \nWhile this will work for the majority of years it will not work on years that are multiples of 100 but not multiples of 400 i.e.(2100). \nA function not using php's date() function that will also account for this small anomaly in leap years:<\/p>\n <?php \n<\/span>function <\/span>is_leapyear_working<\/span>(<\/span>$year <\/span>= <\/span>2004<\/span>) { \nif(((<\/span>$year<\/span>%<\/span>4<\/span>==<\/span>0<\/span>) && (<\/span>$year<\/span>%<\/span>100<\/span>!=<\/span>0<\/span>)) || <\/span>$year<\/span>%<\/span>400<\/span>==<\/span>0<\/span>) { \nreturn <\/span>true<\/span>; \n} \nreturn <\/span>false<\/span>; \n} \n<\/span>?> \n<\/span> \nWhile is_leapyear_working will not return true for the few non-leap years divisible by four I couldn't tell you if this is more or less efficient than using php's date() as an even earlier poster suggested:<\/p>\n <?php \n<\/span>function <\/span>is_leapyear<\/span>(<\/span>$year <\/span>= <\/span>2004<\/span>) { \n<\/span>$is_leap <\/span>= <\/span>date<\/span>(<\/span>'L'<\/span>, <\/span>strtotime<\/span>(<\/span>\"<\/span>$year<\/span>-1-1\"<\/span>)); \nreturn <\/span>$is_leap<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-5<\/div>\n<\/div>\nAnonymous<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nTo find last sunday for given date<\/p>\n<?php \n$day <\/span>= <\/span>'2012-10-04'<\/span>; \necho <\/span>'last sunday :\u00a0 '<\/span>.<\/span>date<\/span>(<\/span>\"Y-m-d\"<\/span>,<\/span>strtotime<\/span>(<\/span>$day<\/span>.<\/span>\" last Sunday \"<\/span>)); \n<\/span>?> \n<\/span> \noutput:<\/p>\n last sunday : 2012-09-30<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nChris<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nUse this to convert the local\/UTC hour to the UTC\/local hour:<\/p>\n<?php \n<\/span>for(<\/span>$utc_to_local <\/span>= array(), <\/span>$offset <\/span>= <\/span>date<\/span>(<\/span>'Z'<\/span>), <\/span>$h <\/span>= <\/span>0<\/span>; <\/span>$h <\/span>< <\/span>24<\/span>;<\/span>$utc_to_local<\/span>[] = <\/span>date<\/span>(<\/span>'G'<\/span>, <\/span>mktime<\/span>(<\/span>$h<\/span>++)+<\/span>$offset<\/span>)); \n<\/span>$local_to_utc <\/span>= <\/span>array_flip<\/span>(<\/span>$utc_to_local<\/span>);<\/p>\n echo <\/span>\"2 am local is \"<\/span>, <\/span>$local_to_utc<\/span>[<\/span>2<\/span>], <\/span>\" UTC\"<\/span>; \necho <\/span>\"3 pm UTC is \"<\/span>, <\/span>$utc_to_local<\/span>[<\/span>15<\/span>], <\/span>\" local\"<\/span>; \n<\/span>?> \n<\/span> \nThis is useful when you need to do many conversions. Lookup tables are faster than calling date() and mktime() multiple times.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nfrank at interactinet dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nIf you want to compare this week with the same week last year, here is some code to get you the time at the beginning of the week.\u00a0 You can then add days, hours, etc to get to the day of the week that you want to know about.<\/p>\n<?php \n$time_passed <\/span>= (<\/span>date<\/span>(<\/span>'N'<\/span>)-<\/span>1<\/span>)* <\/span>24 <\/span>* <\/span>3600<\/span>; <\/span>\/\/ time since start of week in days \n<\/span>$startOfWeek <\/span>= <\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>date<\/span>(<\/span>'m'<\/span>),<\/span>date<\/span>(<\/span>'d'<\/span>),<\/span>date<\/span>(<\/span>'Y'<\/span>)) - <\/span>$time_passed<\/span>;<\/p>\n <\/span>$lastyear <\/span>= <\/span>$startOfWeek <\/span>- <\/span>365<\/span>*<\/span>24<\/span>*<\/span>3600<\/span>;<\/p>\n <\/span>\/\/ make sure time used from last year is the same week of the year \n<\/span>$weekdiff <\/span>= <\/span>date<\/span>(<\/span>'W'<\/span>) - <\/span>date<\/span>(<\/span>'W'<\/span>,<\/span>$lastyear<\/span>); \nif(<\/span>$weekdiff <\/span>!= <\/span>0<\/span>) \n{ \n<\/span>$lastyear <\/span>= <\/span>$lastyear <\/span>+ (<\/span>$weekdiff<\/span>*<\/span>7<\/span>*<\/span>24<\/span>*<\/span>3600<\/span>); \n}<\/p>\n <\/span>$lastyear_time_passed <\/span>= (<\/span>date<\/span>(<\/span>'N'<\/span>,<\/span>$lastyear<\/span>)-<\/span>1<\/span>) * <\/span>24 <\/span>*<\/span>3600<\/span>; <\/span>\/\/ time since start of week in days<\/p>\n <\/span>$startOfWeek_lastyear <\/span>=<\/span>mktime<\/span>(<\/span>0<\/span>,<\/span>0<\/span>,<\/span>0<\/span>,<\/span>date<\/span>(<\/span>'m'<\/span>,<\/span>$lastyear<\/span>),<\/span>date<\/span>(<\/span>'d'<\/span>,<\/span>$lastyear<\/span>),<\/span>date<\/span>(<\/span>'Y'<\/span>,<\/span>$lastyear<\/span>)) - <\/span>$lastyear_time_passed<\/span>; \n<\/span>?> \n<\/span> \nSo now you have the unix time for the start of this week ($startOfWeek), and the start of the same week last year ($startOfWeek_lastyear).<\/p>\n You can convert back to datetime format easily:<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>'Y-m-d H:i:s'<\/span>,<\/span>$startOfWeek<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>date<\/span>(<\/span>'Y-m-d H:i:s'<\/span>,<\/span>$startOfWeek_lastyear<\/span>).<\/span>'<br><br>'<\/span>;<\/p>\n echo <\/span>date<\/span>(<\/span>'l F jS, Y'<\/span>,<\/span>$startOfWeek<\/span>).<\/span>'<br>'<\/span>; \necho <\/span>date<\/span>(<\/span>'l F jS, Y'<\/span>,<\/span>$startOfWeek_lastyear<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nscott at keenot dot es<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nIf anyone needs a really fast function for converting a datetime string (i.e. as retrieved from a MySQL DATETIME entry) into a human-friendly time output analogous to date($format, $time), here's a useful function.<\/p>\n<?php \n<\/span>function <\/span>fdate<\/span>(<\/span>$datetimestring <\/span>= <\/span>'1970-01-01 00:00:00'<\/span>, <\/span>$format <\/span>=<\/span>'U'<\/span>) { \n<\/span>\/\/ Create a datetime object, return it formatted \n\/\/ If you want to give credit for this somewhere, thanks. \n\/\/ You really don't have to though; this is kinda obvious \n<\/span>$dt <\/span>= new <\/span>DateTime<\/span>(<\/span>$datetimestring<\/span>); \nreturn <\/span>$dt<\/span>-><\/span>format<\/span>(<\/span>$format<\/span>); \n} \n<\/span>?> \n<\/span> \nThe main purpose of this is to reduce lines of code and allow inline coding. For example: \n<?php \n<\/span>\/* ... *\/ \n<\/span>echo <\/span>\"This page was submitted on \"<\/span>.<\/span>fdate<\/span>(<\/span>$row<\/span>[<\/span>'created'<\/span>], <\/span>'F j, Y g:i:s A'<\/span>).<\/span>\" and last modified \"<\/span>.<\/span>fdate<\/span>(<\/span>$row<\/span>[<\/span>'modified'<\/span>], <\/span>'F j, Y g:i:s A'<\/span>).<\/span>\"<br \/>\\n\"<\/span>; \n<\/span>\/* ... *\/ \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-4<\/div>\n<\/div>\nstokestack at gmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nIf you want to find your server's timezone offset from GMT, it seems as though you could just do:<\/p>\ndate('Z')<\/p>\n to get the number of seconds offset. But PHP requires that you call date_default_timezone_set().\u00a0 So if you have to hard-code a timezone, why not simply hard-code a variable that tells you the offset from GMT?\u00a0 If you set the timezone to GMT, the dates in your database will still be in local time, but time('Z') will return zero.<\/p>\n To keep your code portable across servers in different timezones, you can do this:<\/p>\n date_default_timezone_set(date_default_timezone_get())<\/p>\n This keeps PHP from complaining that you haven't called date_default_timezone_set(), but makes your code portable.\u00a0 Ridiculous.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-8<\/div>\n<\/div>\nlehal2 at hotmail dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 2 years ago<\/strong><\/div>\n\nhere is an example how you can make numeric days of the week from 1 to 7(Monday to Friday)<\/p>\n<?php \n$currentdate\u00a0 <\/span>= <\/span>mktime<\/span>(<\/span>0<\/span>, <\/span>0<\/span>, <\/span>0<\/span>, <\/span>date<\/span>(<\/span>\"m\"<\/span>)\u00a0 , <\/span>date<\/span>(<\/span>\"d\"<\/span>), <\/span>date<\/span>(<\/span>\"Y\"<\/span>)); \necho <\/span>$day_eg1 <\/span>= <\/span>date <\/span>(<\/span>'N'<\/span>,<\/span>$currentdate<\/span>); \necho <\/span>$day_eg2 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>1 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg3<\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>2 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg4 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>3 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg5 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>4 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg6 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>5 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \necho <\/span>$day_eg7 <\/span>= <\/span>date<\/span>(<\/span>\"N\"<\/span>, <\/span>$today<\/span>+<\/span>6 <\/span>* <\/span>24 <\/span>* <\/span>3600<\/span>); \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-10<\/div>\n<\/div>\nblinov vyacheslav AT gmail.com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\nIt was oblivious and discouraging that it dont mentioned in docs. If you will use W to get week number be aware: \nfirst days of year can be in a week of previous year, and week number always has leading zero<\/p>\n<?php<\/p>\n <\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-07\"<\/span>)); <\/span>\/\/ gives 201101 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-01-01\"<\/span>)); <\/span>\/\/ gives 201152 \n<\/span>echo <\/span>date<\/span>(<\/span>\"YW\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"2011-12-31\"<\/span>)); <\/span>\/\/ gives 201152 too<\/p>\n <\/span>?> \n<\/span> \nso you can`t rely on number of week given from this function inside your program if you want to use it for some logic<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-6<\/div>\n<\/div>\nttt_joe_08<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nJust FYI, it's more appropriate to say \"UTC\", not \"GMT\". GMT was given up in 1972 and UTC is now the proper way. The reason being G stands for Greenwich, which naturally upset some people.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-6<\/div>\n<\/div>\nJacques Marais<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nIf you want to print something like: Tuesday, the 14th of January, 2014<\/p>\nUse this:<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"l\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)).<\/span>', the'<\/span>.<\/span>date<\/span>(<\/span>\" jS\"<\/span>,<\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)).<\/span>' of'<\/span>.<\/span>date<\/span>(<\/span>\" F, Y\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)); \n<\/span>?> \n<\/span> \nThis is because you cannot use words in the date string. If you use words in the date string it will be seen as a format character<\/p>\n So if you use:<\/p>\n <?php \n<\/span>echo <\/span>date<\/span>(<\/span>\"l, the jS of F, Y\"<\/span>, <\/span>strtotime<\/span>(<\/span>\"now\"<\/span>)); \n<\/span>?> \n<\/span> \nIt will print something like: Tuesday, 3108Europe\/Berlin 14th 2014f January, 2014<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-10<\/div>\n<\/div>\nchubby at chicks dot com<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 7 years ago<\/strong><\/div>\n\n<?php \n<\/span>\/** \n* Checks wether a date is between an interval \n* \n* Usage: \n* \n* \/\/ check if today is older than 2008\/12\/31 \n* var_dump(currentDayIsInInterval('2008\/12\/31')); \n* \/\/ check if today is younger than 2008\/12\/31 \n* var_dump(currentDayIsInInterval(null,'2008\/12\/31')); \n* \/\/ check if today is between 2008\/12\/01 and 2008\/12\/31 \n* var_dump(currentDayIsInInterval('2008\/12\/01','2008\/12\/31')); \n* \n* Will trigger errors if date is in wrong format, notices if $begin > $end \n* \n* @param string $begin Date string as YYYY\/mm\/dd \n* @param string $end Date string as YYYY\/mm\/dd \n* @return bool \n*\/ \n<\/span>function <\/span>currentDayIsInInterval<\/span>(<\/span>$begin <\/span>= <\/span>''<\/span>,<\/span>$end <\/span>= <\/span>''<\/span>) \n{ \n<\/span>$preg_exp <\/span>= <\/span>'\"[0-9][0-9][0-9][0-9]\/[0-9][0-9]\/[0-9][0-9]\"'<\/span>; \n<\/span>$preg_error <\/span>= <\/span>'Wrong parameter passed to function '<\/span>.<\/span>__FUNCTION__<\/span>.<\/span>' : Invalide date \nformat. Please use YYYY\/mm\/dd.'<\/span>; \n<\/span>$interval_error <\/span>= <\/span>'First parameter in '<\/span>.<\/span>__FUNCTION__<\/span>.<\/span>' should be smaller than \nsecond.'<\/span>; \nif(empty(<\/span>$begin<\/span>)) \n{ \n<\/span>$begin <\/span>= <\/span>0<\/span>; \n} \nelse \n{ \nif(<\/span>preg_match<\/span>(<\/span>$preg_exp<\/span>,<\/span>$begin<\/span>)) \n{ \n<\/span>$begin <\/span>= (int)<\/span>str_replace<\/span>(<\/span>'\/'<\/span>,<\/span>''<\/span>,<\/span>$begin<\/span>); \n} \nelse \n{ \n<\/span>trigger_error<\/span>(<\/span>$preg_error<\/span>,<\/span>E_USER_ERROR<\/span>); \n} \n} \nif(empty(<\/span>$end<\/span>)) \n{ \n<\/span>$end <\/span>= <\/span>99999999<\/span>; \n} \nelse \n{ \nif(<\/span>preg_match<\/span>(<\/span>$preg_exp<\/span>,<\/span>$end<\/span>)) \n{ \n<\/span>$end <\/span>= (int)<\/span>str_replace<\/span>(<\/span>'\/'<\/span>,<\/span>''<\/span>,<\/span>$end<\/span>); \n} \nelse \n{ \n<\/span>trigger_error<\/span>(<\/span>$preg_error<\/span>,<\/span>E_USER_ERROR<\/span>); \n} \n} \nif(<\/span>$end <\/span>< <\/span>$begin<\/span>) \n{ \n<\/span>trigger_error<\/span>(<\/span>$interval_error<\/span>,<\/span>E_USER_WARNING<\/span>); \n} \n<\/span>$time <\/span>= <\/span>time<\/span>(); \n<\/span>$now <\/span>= (int)(<\/span>date<\/span>(<\/span>'Y'<\/span>,<\/span>$time<\/span>).<\/span>date<\/span>(<\/span>'m'<\/span>,<\/span>$time<\/span>).<\/span>date<\/span>(<\/span>'j'<\/span>,<\/span>$time<\/span>)); \nif(<\/span>$now <\/span>> <\/span>$end <\/span>or <\/span>$now <\/span>< <\/span>$begin<\/span>) \n{ \nreturn <\/span>false<\/span>; \n} \nreturn <\/span>true<\/span>; \n} \n<\/span>?><\/span><\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-12<\/div>\n<\/div>\nRyan<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 7 months ago<\/strong><\/div>\n\nThat\u00a0 is just too hard anyone have it easier terms for a lad who only has internet for 5 mis a day cause he has to walk his pet peanut<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-28<\/div>\n<\/div>\nmatt<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 3 years ago<\/strong><\/div>\n\ndate() has some strange behavior at extremely high values:<\/p>\n<?php \n<\/span>echo <\/span>\"9223372036854775805: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775805<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775806: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775806<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775807: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775807<\/span>) . <\/span>\" (0x7FFFFFFFFFFFFFFF)\\n\"<\/span>; \necho <\/span>\"9223372036854775808: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775808<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775809: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775809<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854775810: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854775810<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854776832: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854776832<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854776833: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854776833<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854778879: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854778879<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854778880: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854778880<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854780928: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854780928<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854780929: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854780929<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854782975: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854782975<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854782976: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854782976<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854785024: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854785024<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854785025: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854785025<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854787071: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854787071<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854787072: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854787072<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854789120: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854789120<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854789121: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854789121<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854791167: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854791167<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854791168: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854791168<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"...\\n\"<\/span>; \necho <\/span>\"9223372036854793215: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793215<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854793216: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793216<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854793217: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793217<\/span>) . <\/span>\"\\n\"<\/span>; \necho <\/span>\"9223372036854793218: \" <\/span>. <\/span>date<\/span>(<\/span>\"Y-m-d g:i:s a\"<\/span>,\u00a0<\/span>9223372036854793218<\/span>) . <\/span>\"\\n\"<\/span>; \n<\/span>?> \n<\/span> \nOutput:<\/p>\n 9223372036854775805: 292277026596-12-04 10:30:05 am \n9223372036854775806: 292277026596-12-04 10:30:06 am \n9223372036854775807: 292277026596-12-04 10:30:07 am (0x7FFFFFFFFFFFFFFF) \n9223372036854775808: 292277026596-12-04 10:30:08 am \n9223372036854775809: 292277026596-12-04 10:30:08 am \n9223372036854775810: 292277026596-12-04 10:30:08 am \n... \n9223372036854778879: 292277026596-12-04 10:30:08 am \n9223372036854778880: 292277026596-12-04 11:04:16 am \n... \n9223372036854778879: 292277026596-12-04 11:04:16 am \n9223372036854778880: 292277026596-12-04 11:38:24 am \n... \n9223372036854780928: 292277026596-12-04 11:38:24 am \n9223372036854780929: 292277026596-12-04 12:12:32 pm \n... \n9223372036854782975: 292277026596-12-04 12:12:32 pm \n9223372036854782976: 292277026596-12-04 12:46:40 pm \n... \n9223372036854785024: 292277026596-12-04 12:46:40 pm \n9223372036854785025: 292277026596-12-04 1:20:48 pm \n... \n9223372036854787071: 292277026596-12-04 1:20:48 pm \n9223372036854787072: 292277026596-12-04 1:54:56 pm \n... \n9223372036854789120: 292277026596-12-04 1:54:56 pm \n9223372036854789121: 292277026596-12-04 2:29:04 pm \n... \n9223372036854791167: 292277026596-12-04 2:29:04 pm \n9223372036854791168: 292277026596-12-04 3:03:12 pm \n... \n9223372036854793215: 292277026596-12-04 3:03:12 pm \n9223372036854793216: 292277026596-12-04 3:03:12 pm \n9223372036854793217: -292277022657-01-27 8:37:04 am \n9223372036854793218: -292277022657-01-27 8:37:04 am<\/p>\n ---<\/p>\n So, the last reliable unix timecode is 9223372036854775808 (0x1000000000000000). Not that you would probably ever need a date that high.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n\n\nup<\/a><\/div>\ndown<\/a><\/div>\n-9<\/div>\n<\/div>\nManu Manjunath<\/em><\/strong><\/a> \u00b6<\/a><\/p>\n 1 year ago<\/strong><\/div>\n\nIf you want to use \"u\" format specifier for micrseconds without changing to DateTime object, you may write a function as below: \n<?php \n<\/span>\/** \n* Quick replacement to date() function to handle the 'u' format specifier (for microseconds) \n* @param string $format Date format string - the same format string you would pass to date() function \n* @param float $timestamp [optional] Unix timestamp with microseconds - Typically output of <b>microtime(true)<\/b> \n* @return string Formatted string \n*\/ \n<\/span>function <\/span>date_with_micro<\/span>(<\/span>$format<\/span>, <\/span>$timestamp <\/span>= <\/span>null<\/span>) { \nif (<\/span>is_null<\/span>(<\/span>$timestamp<\/span>) || <\/span>$timestamp <\/span>=== <\/span>false<\/span>) { \n<\/span>$timestamp <\/span>= <\/span>microtime<\/span>(<\/span>true<\/span>); \n} \n<\/span>$timestamp_int <\/span>= (int) <\/span>floor<\/span>(<\/span>$timestamp<\/span>); \n<\/span>$microseconds <\/span>= (int) <\/span>round<\/span>((<\/span>$timestamp <\/span>- <\/span>floor<\/span>(<\/span>$timestamp<\/span>)) *<\/span>1000000.0<\/span>, <\/span>0<\/span>); \n<\/span>$format_with_micro <\/span>= <\/span>str_replace<\/span>(<\/span>\"u\"<\/span>, <\/span>$microseconds<\/span>, <\/span>$format<\/span>); \nreturn <\/span>date<\/span>(<\/span>$format_with_micro<\/span>, <\/span>$timestamp_int<\/span>); \n} \n<\/span>?> \n<\/span> \nYou can safely replace your date() function with date_with_micro().<\/span><\/code><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"(PHP 4, PHP 5) date \u2014 \u683c\u5f0f\u5316\u4e00\u4e2a\u672c\u5730\u65f6\u95f4\uff0f\u65e5\u671f...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-583","post","type-post","status-publish","format-standard","hentry","category-phpjsshell"],"_links":{"self":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=583"}],"version-history":[{"count":1,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/583\/revisions"}],"predecessor-version":[{"id":584,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/583\/revisions\/584"}],"wp:attachment":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}