3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php if (!defined('__DIR__')) { echo 'ok'."\n"; define('__DIR__', dirname(__FILE__)); } else { echo 'nok'."\n"; } echo __DIR__;
based on Z2tkf
Output for 4.3.0 - 7.2.0
ok /in