3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php define('TRUE', 1); if (TRUE) { echo "TRUE"; } else { echo "FALSE!!!"; }
Output for 4.3.0 - 5.6.28, 7.0.0 - 7.1.0
TRUE
Output for hhvm-3.12.0
Notice: Constant TRUE already defined in /in/baO8H on line 2 TRUE
Output for hhvm-3.10.0

Process exited with code 153.