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PHP | gmdate() Function

Last Updated : 05 Jul, 2018

The gmdate() is an inbuilt function in PHP which is used to format a GMT/UTC date and time and return the formatted date strings. It is similar to the date() function but it returns the time in Greenwich Mean Time (GMT).

Syntax:

string gmdate ( $format, $timestamp )

Parameters: The gmdate() function accepts two parameters as mentioned above and described below:

$format: It is a mandatory parameter which specifies the format of returned date and time.
$timestamp: Timestamp is an optional parameter, if it is not included then current date and time will be used.

Return Value: This function Returns a formatted date string on success and FALSE on failure and an E_WARNING.

Below programs illustrate the gmdate() function.

Program 1:

<?php 
// PHP program to illustrate gmdate function 
  
// display date Jun 25 2018 23:21:50 
echo gmdate("M d Y H:i:s", 
        mktime(23, 21, 50, 6, 25, 2018)) ."\n"; 
  
// display date  World Wide Web Consortium 
// 2018-06-25T23:21:50+00:00 
echo gmdate(DATE_W3C, 
        mktime(23, 21, 50, 6, 25, 2018)). "\n"; 
  
  
// display date as ISO-8601 format 
echo gmdate(DATE_ISO8601, 
        mktime(23, 21, 50, 6, 25, 2018)). "\n"; 
          
?> 

Output:

Jun 25 2018 23:21:50
2018-06-25T23:21:50+00:00
2018-06-25T23:21:50+0000

Program 2: Passing one parameter, then it will return the current local time (time()).

<?php 
// PHP program to illustrate gmdate function 
  
// display current date and time  
// Jun 28 2018 14:52:50 
echo gmdate("M d Y H:i:s") ."\n"; 
  
// display date  World Wide Web Consortium 
echo gmdate(DATE_W3C). "\n"; 
  
  
// display date as ISO-8601 format 
echo gmdate(DATE_ISO8601). "\n"; 
          
?> 

Output:

Jun 29 2018 06:32:34
2018-06-29T06:32:34+00:00
2018-06-29T06:32:34+0000

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Reference: http://php.net/manual/en/function.gmdate.php

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