3v4l.org

run code in 300+ PHP versions simultaneously
<?php $calc = function ($arg = null, $acc = '') use (&$calc) { return $arg === null ? $acc : function ($arg = null, $saved = '') use (&$calc, $acc) { return $calc($arg, $arg . $acc . $saved); }; }; $result = $calc(1)(3)(3)(8)(); var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "833"

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:
49.23 ms | 401 KiB | 8 Q