The date () function in PHP

Instance

Formats the local date and time and returns the formatted date string:

<?php//Prints the Dayecho date ("L"). "<br>";//Prints the day, date, month, year, time, AM or Pmecho date ("L JS of F Y h:i:s A");? >

　　

Definition and usage

The date () function formats the local date and time and returns the formatted date string.

Syntax Date ( format,timestamp);

Parameters	Description
Format	Necessary. Specifies the format of the output date string. You can use the following characters: D-the day of the one month (from 01 to 31) D-The text representation of the Day of the week (denoted by three letters) J-the day of the one month without leading 0 (1 to 31) L (lowercase form of ' l ')-Full text representation of the day of the week N-ISO-8601 number format representation of the Day of the week (1 for monday[Monday], 7 for sunday[Sunday]) S-The English ordinal suffix of the first day of the one month (2 characters: St, ND, RD, or th. Used with J) W-Number representation of the day of the week (0 = sunday[Sunday], 6 = saturday[Saturday]) Z-the day ordinal of a year (from 0 to 365) W-a ISO-8601 number format that represents the weekday number of the year (starting from monday[Monday] per week) F-Full text representation of the month (january[January] to december[December]) M-Number representation of the month (from 01 to 12) M-month short text representation (denoted by three letters) N-numeric representation of the month without leading 0 (1 to 12) T-number of days included in a given month L-whether it is a leap year (1 if it is a leap year, otherwise 0) Year numbers under the o-iso-8601 standard Y-the four-digit number of years represents Y-two-digit representation of the year A-lowercase form means: AM or PM A-Uppercase indicates: AM or PM B-swatch Internet time (000 to 999) G-12 hours, without leading 0 (1 to 12) G-24-hour system without leading 0 (0 to 23) H-12 Hour, with leading 0 (01 to 12) H-24-hour system with leading 0 (00 to 23) I-min, with leading 0 (00 to 59) S-sec with leading 0 (00 to 59) U-microseconds (New in PHP 5.2.2) e-time zone identifier (for example: UTC, GMT, Atlantic/azores) I (uppercase Form I)-whether the date is in daylight saving time (1 if daylight saving time, otherwise 0) O-Greenwich mean GMT (GMT) difference, in hours (example: +0100) P-Greenwich Mean (GMT) difference, in Hours:minutes (New in PHP 5.1.3) T-Shorthand for time zones (example: EST, MDT) Z-The time zone offset in seconds. The offset for the time zone west of UTC is a negative number (-43200 to 50400) Date of c-iso-8601 standard (e.g. 2013-05-05t16:34:42+00:00) R-RFC 2822 format date (e.g. Fri, April 2013 12:01:05 +0200) U-Number of seconds elapsed since the Unix era (January 1 1970 00:00:00 GMT) You can also use the following predefined constants (available starting from PHP 5.1.0): Date_atom-atom (ex: 2013-04-12t15:52:01+00:00) Date_cookie-http Cookies (ex: Friday, 12-apr-13 15:52:01 UTC) date_iso8601-iso-8601 (ex: 2013-04-12t15:52:01+0000) DATE_RFC822-RFC 822 (example: Fri, April 13 15:52:01 +0000) DATE_RFC850-RFC 850 (example: Friday, 12-apr-13 15:52:01 UTC) DATE_RFC1036-RFC 1036 (Example: Fri, April 13 15:52:01 +0000) DATE_RFC1123-RFC 1123 (Example: Fri, April 2013 15:52:01 +0000) DATE_RFC2822-RFC 2822 (Fri, April 2013 15:52:01 +0000) date_rfc3339-Same as Date_atom (starting with PHP 5.1.3) Date_rss-rss (Fri, 2013 15:52:01 +0000) DATE_W3C-World Wide Web Consortium (ex: 2013-04-12T15:52:01+00:00)
Timestamp	Optional. A Unix timestamp that specifies an integer. The default is the current local time (hour ()).

Technical details

return value:	Returns the formatted date string if successful, and returns FALSE if the failure is e_warning.
PHP version:	4 +
Update log:	PHP 5.1.0: Added e_strict and e_notice time zone errors. The valid range timestamp is from December 13, 1901 20:45:54 GMT Friday to January 19, 2038 03:14:07 GMT Tuesday. Prior to 5.1.0, the timestamp on some systems (such as Windows) was limited from 01-01-1970 to 19-01-2038. PHP 5.1.1: New standard date/time format constants for specifying the format parameter.

The date () function in PHP