3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(1, 2, 3, 4); echo key($arr), "=>", current($arr), "\r\n"; foreach ($arr as $key => $row) { next($arr); echo key($arr), "=>", current($arr), "\r\n"; }
Output for 4.3.0 - 5.2.3, 7.0.0 - 7.1.0
0=>1 1=>2 2=>3 3=>4 =>
Output for 5.2.4 - 5.6.28
0=>1 2=>3 3=>4 => =>