3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo date('Y-m-d', strtotime('first day of next month', strtotime('2015-05-01')));
Output for 5.3.0 - 7.2.0
2015-06-01
Output for 4.3.0 - 5.2.17
1970-01-01