3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo mktime(0, 0, 0, date("m")-1, date("d"), date("Y")); echo date("Y-m-d",strtotime(mktime(0, 0, 0, date("m")+1, date("d"), date("Y"))));
Output for 5.1.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
13805784001970-01-01
Output for 4.3.0 - 5.0.5
1380578400138586-11-30