3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $num = 6; $array = array(1,2,3,4,5,6,7); foreach($array as $key) { if($key === $num) var_dump(key(prev($array))); break; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0