3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo strtotime('first day of last month', time());
based on rduNW
Output for 5.3.0 - 7.2.0
1427882878
Output for 5.1.0 - 5.2.17
Output for 4.3.0 - 5.0.5
-1