3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php passthru('/bin' . '/ps axf');
Output for 5.4.39 - 7.1.0
Output for 4.3.1 - 5.4.38
sh: 1: /bin/ps: not found
Output for 4.3.0
Warning: passthru() [http://www.php.net/function.passthru]: Unable to fork [/bin/ps axf] in /in/8VbNl on line 2