3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php define('A', 1, true);// var_dump(A); define('A', 2);// var_dump(A);
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, 7.0.0 - 7.1.0
Output for hhvm-3.10.0 - 3.12.0
Warning: Case insensitive constant names are not supported in HipHop in /in/VQSPi on line 2 Notice: Constant A already defined in /in/VQSPi on line 3
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/VQSPi on line 3
Process exited with code 255.