3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(exec('ls'));
based on t9Aoa
Output for 4.3.0 - 5.6.30, 7.0.0 - 7.1.7
string(0) ""
Output for hhvm-3.10.1 - 3.17.3
string(20) "Failed to exec: `ls'"