3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo gmdate(DATE_W3C);
based on l8pQm
Output for 5.1.3 - 7.1.0
2014-08-25T21:54:55+00:00
Output for 5.1.1 - 5.1.2
2014-08-25T21:54:55+0000
Output for 4.3.0 - 5.1.0
Notice: Use of undefined constant DATE_W3C - assumed 'DATE_W3C' in /in/CPAVF on line 2 MonPMGMTE_353C