3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(shell_exec('uname -a'));
based on C0G6I
Output for 5.4.41 - 7.2.0
NULL
Output for 5.0.0 - 5.4.40
NULL sh: 1: uname: not found
Output for 4.3.1 - 4.4.9
string(0) "" sh: 1: uname: not found
Output for 4.3.0
string(0) ""