Format a GMT/UTC date and time and return the formatted date string:
<?php// Prints the dayecho gmdate("l") . "<br>";// Prints the day, date, month, year, time, AM or PMecho gmdate("l jS of FY h:i:s A");?>The gmdate() function formats a GMT/UTC date and time and returns a formatted date string.
gmdate( format,timestamp);
| parameter | describe |
|---|---|
| format | Required. Specifies the format of the output date string. The following characters can be used: d - day of the month (from 01 to 31) D - textual representation of the day of the week (in three letters) j - Day of the month, without leading zeros (1 to 31) l (lowercase 'L') - the full textual representation of the day of the week N - Day of the week in ISO-8601 numeric format (1 for Monday, 7 for Sunday) S - English ordinal suffix for the day of the month (2 characters: st, nd, rd, or th. Used with j) w - the numeric day of the week (0 means Sunday, 6 means Saturday) z - day of the year (from 0 to 365) W - Represents the day of the year in ISO-8601 numeric format (week starts on Monday) F - The complete text representation of the month (January to December) m - numeric representation of the month (from 01 to 12) M - A short text representation of the month (represented by three letters) n - the numeric representation of the month, without leading zeros (1 to 12) t - the number of days in a given month L - whether it is a leap year (1 if it is a leap year, 0 otherwise) o - year number according to ISO-8601 standard Y - Four-digit representation of the year y - two-digit year a - lowercase: am or pm A - Capital form: AM or PM B - Swatch Internet Time (000 to 999) g - 12-hour clock without leading zeros (1 to 12) G - 24-hour clock without leading zeros (0 to 23) h - 12-hour clock with leading zeros (01 to 12) H - 24-hour clock with leading zeros (00 to 23) i - cents, with leading zeros (00 to 59) s - seconds with leading zeros (00 to 59) u - microseconds (new in PHP 5.2.2) e - Time zone identifier (for example: UTC, GMT, Atlantic/Azores) I (capital form of i) - Whether the date is in daylight saving time (1 if it is daylight saving time, 0 otherwise) O - Difference from Greenwich Mean Time (GMT) in hours (example: +0100) P - The difference between Greenwich Mean Time (GMT), in hours:minutes (new in PHP 5.1.3) T - Abbreviation for time zone (examples: EST, MDT) Z - Time zone offset in seconds. Negative offsets for time zones west of UTC (-43200 to 50400) c - ISO-8601 standard date (e.g. 2013-05-05T16:34:42+00:00) r - Date in RFC 2822 format (e.g. Fri, 12 Apr 2013 12:01:05 +0200) U - Number of seconds since the Unix epoch (January 1 1970 00:00:00 GMT) Also, the following predefined constants can be used (available since PHP 5.1.0): DATE_ATOM - Atom (for example: 2013-04-12T15:52:01+00:00) DATE_COOKIE - HTTP Cookies (example: Friday, 12-Apr-13 15:52:01 UTC) DATE_ISO8601 - ISO-8601 (for example: 2013-04-12T15:52:01+0000) DATE_RFC822 - RFC 822 (Example: Fri, 12 Apr 13 15:52:01 +0000) DATE_RFC850 - RFC 850 (example: Friday, 12-Apr-13 15:52:01 UTC) DATE_RFC1036 - RFC 1036 (Example: Fri, 12 Apr 13 15:52:01 +0000) DATE_RFC1123 - RFC 1123 (Example: Fri, 12 Apr 2013 15:52:01 +0000) DATE_RFC2822 - RFC 2822 (Fri, 12 Apr 2013 15:52:01 +0000) DATE_RFC3339 - Same as DATE_ATOM (as of PHP 5.1.3) DATE_RSS - RSS (Fri, 12 Aug 2013 15:52:01 +0000) DATE_W3C - World Wide Web Consortium (example: 2013-04-12T15:52:01+00:00) |
| timestamp | Optional. Specifies an integer Unix timestamp. The default is the current local time (time()). |
| Return value: | If successful, a formatted date string is returned. If failed, an E_WARNING error is reported and FALSE is returned. |
|---|---|
| PHP version: | 4+ |
| Update log: | PHP 5.1.0: The valid range of timestamps is from Friday, December 13, 1901 20:45:54 GMT to Tuesday, January 19, 2038, 03:14:07 GMT. Prior to 5.1.0, on some systems (e.g. Windows) timestamps were limited to from 01-01-1970 to 19-01-2038. PHP 5.1.1: New standard date/time format constants for specifying the format parameter. |