3v4l.org

run code in 300+ PHP versions simultaneously
<?php $afr = function(&$v) use (&$afr) { if (is_array($v)) { foreach($v as $key=>$val) { if (empty($val)) unset($v[$key]); if (is_array($val)) $v[$key] = $afr($val); } } return $v; }; $a = ['',['',['a', 'b'],'c'],'d']; $b = $a; var_dump($afr($b)); ?><hr><?php var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [1]=> array(2) { [1]=> array(2) { [0]=> string(1) "a" [1]=> string(1) "b" } [2]=> string(1) "c" } [2]=> string(1) "d" } <hr>array(3) { [0]=> string(0) "" [1]=> array(3) { [0]=> string(0) "" [1]=> array(2) { [0]=> string(1) "a" [1]=> string(1) "b" } [2]=> string(1) "c" } [2]=> string(1) "d" }

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:
69.83 ms | 402 KiB | 8 Q