3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php system("/bin/cat /etc/passwd");
based on ZZJr8
Output for 4.3.0, 5.4.45 - 7.2.0
Output for 4.3.1 - 5.4.44
sh: 1: /bin/cat: not found