3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(passthru('/bin/ls'));
Output for 4.3.0 - 5.6.28, 7.0.0 - 7.1.0
NULL
Output for hhvm-3.10.0 - 3.13.2
Failed to exec: `/bin/ls' NULL