3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo realpath(__DIR__);
Output for 5.3.0 - 7.2.0
/in
Output for 4.3.0 - 5.2.17
Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /in/HDhs9 on line 2