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# gmdate

(PHP 3, PHP 4 , PHP 5)

gmdate -- Format a GMT/UTC date/time

## Description

string gmdate ( string format [, int timestamp])

Identical to the date() function except that the time returned is Greenwich Mean Time (GMT). For 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".

示範 1.gmdate() example
`<?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)); ?>`

> 備注: In the Microsoft Windows series of Operating Systems the system libraries implementing this function are broken, so gmdate() does not support negative values for the timestamp. For details see bug reports: #22620, #22457, and #14391.

> This problem does not occur in Unix/Linux Operating Systems, as the system libraries behave as expected.

> PHP cannot fix broken system libraries. Contact your OS vendor for a fix to this and similar problems.

See also date(), mktime(), gmmktime() and strftime().

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