3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = strtotime('2017-07-13'); $b= strtotime('2017-07-13 4:00PM'); print ($b-$a)/3600;
based on DERNJ
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
16