3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php print(exec('whoami')); ?>
Output for 4.3.0 - 5.3.28, 5.4.0 - 5.4.27, 5.4.39 - 7.2.0
Output for 5.3.29, 5.4.28 - 5.4.38
sh: 1: whoami: not found