3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php const TRUE = false; if (TRUE) { echo "TRUE"; } else { echo "FALSE!!!"; }
Output for 5.3.0 - 5.4.8
Fatal error: Cannot redeclare constant 'TRUE' in /in/gnps0 on line 2
Process exited with code 255.