PHP: 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).

Parameters

format: The format of the outputted date string. See the formatting options for the date() function.
timestamp: The optional timestamp parameter is an integer Unix timestamp that defaults to the current local time if a timestamp is not given. In other words, it defaults to the value of time().

Return Values

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.

ChangeLog

Version Description

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.

Examples

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));

?>

gmdate

Description

Parameters

Return Values

ChangeLog

Examples

See Also