3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php shell_exec(top); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Notice: Use of undefined constant top - assumed 'top' in /in/vhV9o on line 1