3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Singleton { private static $instance; private function __construct() { echo 'NEW!'; } public static function getInstance() { if (null !== self::$instance) { self::$instance = new self; } return self::$instance; } } $cl = function() { return new self; }; var_dump(Singleton::getInstance());
Output for git.master, git.master_jit, rfc.property-hooks
NULL

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:
40.41 ms | 401 KiB | 8 Q