3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php define('TRUE', false); define('FALSE', true); var_dump(TRUE, true, FALSE, false);
Output for 5.1.3 - 5.6.21, 7.0.0 - 7.1.0alpha1
bool(true) bool(true) bool(false) bool(false)
Output for hhvm-3.9.1 - 3.12.0
Notice: Constant TRUE already defined in /in/4Ze6h on line 2 Notice: Constant FALSE already defined in /in/4Ze6h on line 3 bool(true) bool(true) bool(false) bool(false)
Output for 4.3.0 - 5.1.2
bool(false) bool(true) bool(true) bool(false)