3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(2,5,4,7,8,3,9); reset($arr); next($arr); echo key($arr); next($arr); echo key($arr); next($arr); echo key($arr); next($arr); echo key($arr); $barr = $arr; echo key($arr);
Output for 4.4.1, 5.2.4 - 7.1.0
12344
Output for 4.3.0 - 4.4.0, 4.4.2 - 5.2.3
12340