3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo help(); function check(&$ok) { return $ok; } function help() { $k = array(); return check($k); } ?>
Output for 5.4.0 - 7.2.0
Notice: Array to string conversion in /in/dXXSe on line 3 Array
Output for 4.3.0 - 5.3.29
Array