3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = 'magic == phun'; (@__MPHUN__ == '__MPHUN__') && define('__MPHUN__', strtoupper($str)); echo __MPHUN__;
Output for 4.3.0 - 7.1.0
MAGIC == PHUN