3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo mktime(0, 0, 0, date("m")-1, date("d"), date("Y")); echo date("Y-m-d",strtotime("1 months"));
Output for 4.3.0 - 7.2.0
13805784002013-12-01