3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php system('uuidgen', $output);var_dump($output);
based on fH5rE
Output for 4.3.0, 5.4.45 - 5.6.28, 7.0.0 - 7.1.0
int(127)
Output for hhvm-3.10.0 - 3.12.0
Failed to exec: `uuidgen' int(1)
Output for 4.3.1 - 5.4.44
int(127) sh: 1: uuidgen: not found