3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php define('TRUE', false); echo TRUE, true, trUE; if (!constant('TRUE')){ echo 'no conflict'; }
based on 1RLZH
Output for 5.1.3 - 5.6.21, 7.0.0 - 7.1.0
111no conflict
Output for hhvm-3.12.0
Notice: Constant TRUE already defined in /in/RJnZZ on line 2 111
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.1.2
11no conflict