3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php system('ps aux');
based on 9J95W
Output for 4.3.0, 5.4.39, 5.4.41 - 7.1.0
Output for 5.4.40
Warning: system(): Unable to fork [ps aux] in /in/K3nld on line 2
Output for 4.3.1 - 5.4.38
sh: 1: ps: not found