3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(& strtolower('a'));
Output for hhvm-3.10.0 - 3.12.0
Output for 5.3.0 - 5.4.20
Fatal error: Can't use function return value in write context in /in/94uRr on line 3
Process exited with code 255.