3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = time(); $a = strtotime('2013-11-24T19:00:00'); echo $x-$a;
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.14, 7.1.16 - 7.1.33, 7.2.0 - 7.2.2, 7.2.4 - 7.2.25, 7.3.0 - 7.3.12, 7.4.0
-847176
Output for 7.1.15, 7.2.3
-847175
Output for 4.3.5 - 4.3.11, 4.4.0 - 4.4.9
-875976
Output for 4.3.0 - 4.3.4
-825576
preferences:
238.32 ms | 401 KiB | 322 Q