3v4l.org

run code in 200+ 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 = $arr[3]; echo key($arr);
Output for 4.3.0 - 7.2.0
12344