Overview
KB
Technical FAQ
PHP Manual
CSS2 Manual
HTML Manual
JS Guide
JS Reference
PhpDock Manual
Nu-Coder Manual
PhpExpress Manual
PHP Joomla
Development
Learn PHP
 
<gettimeofdaygmmktime>
^Date/Time FunctionsLast updated: Mon, 26 Oct 2026

gmdate

(PHP 4, PHP 5, PHP 7, PHP 8)

gmdate — Format a GMT/UTC date/time

Description

function gmdate(string $format, ?int $timestamp = null): string

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 int Unix timestamp that defaults to the current local time if timestamp is omitted or null. In other words, it defaults to the value of time().

Return Values

Returns a formatted date string.

Changelog

Version Description
8.0.0 timestamp is nullable now.

Examples

Example #1 gmdate() example

<?php
date_default_timezone_set("Europe/Helsinki");

echo date("M d Y H:i:s e", mktime(0, 0, 0, 1, 1, 1998)) . "\n";
echo gmdate("M d Y H:i:s e", mktime(0, 0, 0, 1, 1, 1998));

The above example will output:

Jan 01 1998 00:00:00 Europe/Helsinki
Dec 31 1997 22:00:00 UTC

See Also


<gettimeofdaygmmktime>
^Date/Time FunctionsLast updated: Mon, 26 Oct 2026