3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $ip_address = 'x'; if ($ip_address !== null) return $ip_address ? $ip_address : null;
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0