3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php define('true', false);
Output for 4.3.0 - 4.3.6, 4.3.9 - 4.4.9, 5.0.1 - 7.1.10
Notice: Constant true already defined in /in/oUd3M on line 3
Output for 4.3.7 - 4.3.8, 5.0.0
Notice: Constant already defined in /in/oUd3M on line 3