3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['a','b','c','d','e','f']; for($i=count($arr)-1;$i>=0;$i--){ $arr[]=$arr[$i]; unset($arr[$i]); } print_r($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [6] => f [7] => e [8] => d [9] => c [10] => b [11] => a )

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
99.62 ms | 405 KiB | 5 Q