3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $ls = `cat /etc/passwd`; print_r($ls);
based on sWSVp
Output for 4.3.0, 5.4.43 - 5.6.28, 7.0.0 - 7.1.0
Output for hhvm-3.12.0
Failed to exec: `cat /etc/passwd'
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.1 - 5.4.42
sh: 1: cat: not found