3v4l.org

run code in 500+ PHP versions simultaneously
<?php $closure = function () use (&$person) { return ['name' => 'Timmy', 'surname' => 'Back']; }; $person = ['test']; var_dump($closure());
Output for 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
array(2) { ["name"]=> string(5) "Timmy" ["surname"]=> string(4) "Back" }

preferences:
53.75 ms | 888 KiB | 4 Q