3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Foo { public function spam(array $values) { usort($values, [$this, 'sort']); return $values; } protected function sort($a, $b) { return -1; } } $a = [ 3, 4, 1, 2, ]; $foo = new Foo(); var_dump($foo->spam($a));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
array(4) { [0]=> int(3) [1]=> int(4) [2]=> int(1) [3]=> int(2) }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
array(4) { [0]=> int(2) [1]=> int(1) [2]=> int(4) [3]=> int(3) }
preferences:
89.47 ms | 1525 KiB | 4 Q