3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if (!defined('__DIR__')) { echo "ok"; define('__DIR__', dirname(__FILE__)); } echo __DIR__;
based on 8ZNGc
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
ok/in