3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(shell_exec('ls -l /'));
Output for 5.0.0 - 5.6.28, 7.0.0 - 7.1.0
NULL
Output for hhvm-3.10.0 - 3.14.4
string(26) "Failed to exec: `ls -l /' "
Output for 4.3.0 - 4.4.9
string(0) ""