3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo strtotime("first day of January"); ?>
Output for 5.6.28, 7.0.14 - 7.1.0
1356994800
Output for 5.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.6
1451602800
Output for 5.1.0 - 5.2.17
Output for 4.3.0 - 5.0.5
-1