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
