gmdate
(PHP 4, PHP 5)
gmdate — Format a GMT/UTC date/time
說明
string gmdate
( string $format
[, int $timestamp
] )
Identical to the date() function except that the time returned is Greenwich Mean Time (GMT).
參數
Return值
Returns a formatted date string. If a non-numeric value is used for timestamp , FALSE is returned and an E_WARNING level error is emitted.
更新日誌
| 版本 | 說明 |
|---|---|
| 5.1.0 | The valid range of a timestamp is typically from Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT. (These are the dates that correspond to the minimum and maximum values for a 32-bit signed integer). However, before PHP 5.1.0 this range was limited from 01-01-1970 to 19-01-2038 on some systems (e.g. Windows). |
| 5.1.1 | There are useful constants of standard date/time formats that can be used to specify the format parameter. |
範例
Example#1 gmdate() example
When run in Finland (GMT +0200), the first line below prints "Jan 01 1998 00:00:00", while the second prints "Dec 31 1997 22:00:00".
<?php
echo date("M d Y H:i:s", mktime(0, 0, 0, 1, 1, 1998));
echo gmdate("M d Y H:i:s", mktime(0, 0, 0, 1, 1, 1998));
?>