3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo strtotime("2015-04"); date("Y-m-d H:i:s",1427839200);
based on QQR1K
Output for 5.0.0 - 5.0.5, 5.2.7 - 7.2.0
1427839200
Output for 5.2.0 - 5.2.6
1427925600
Output for 5.1.0 - 5.1.6
1428020100
Output for 4.3.0 - 4.4.9
-1