3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo __DIR__ ? 'not empty' : 'empty';
Output for 5.3.0 - 7.1.0
not empty
Output for 4.3.0 - 5.2.17
Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /in/3L6qO on line 2 not empty