3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo date("Y-m-d", mktime(0, 0, 0, date("m")-1, 1, date("Y"))); echo date("Y-m-d", mktime(0, 0, 0, date("m"), 0, date("Y")));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
2013-10-012013-10-31