3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo system("whoami");
Output for 4.3.0 - 5.6.30, 7.0.0 - 7.1.7
Output for hhvm-3.10.1 - 3.17.3
Failed to exec: `whoami' Failed to exec: `whoami'