3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'Fri Oct 25 2013 12:04:10 GMT+0100 (GMT Daylight Time)'; $if_modified_since = preg_replace('/;.*$/', '', $a); echo strtotime($if_modified_since);
based on CStMB
Output for 5.1.0 - 5.1.2, 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Output for 5.1.3 - 5.2.17
1382702650
Output for 4.3.0 - 5.0.5
-1