3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['foo' => 'foo', 'bar' => 'bar']; function sorter() { return 0; } uasort($array, 'sorter'); var_dump($array);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(2) { ["foo"]=> string(3) "foo" ["bar"]=> string(3) "bar" }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
array(2) { ["bar"]=> string(3) "bar" ["foo"]=> string(3) "foo" }
preferences:
150 ms | 402 KiB | 197 Q