3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['key1' => 1, 'key2' => 2]; $tmp = $arr['key1']; $arr['key1'] = $arr['key2']; $arr['key2'] = $tmp; var_dump($arr);;
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["key1"]=> int(2) ["key2"]=> int(1) }

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:
27.63 ms | 405 KiB | 5 Q