3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo($a, $b) { return $a[0] <=> $b[0] ?: $a[1] <=> $b[1] ?: $a[2] <=> $b[2] ?: 0; } $array = [ [1, 2, 3], [1, 3, 5], [1, 2, 4], [0, 2, 3], ]; usort($array, foo(...)); print_r($array);
Output for 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Array ( [0] => Array ( [0] => 0 [1] => 2 [2] => 3 ) [1] => Array ( [0] => 1 [1] => 2 [2] => 3 ) [2] => Array ( [0] => 1 [1] => 2 [2] => 4 ) [3] => Array ( [0] => 1 [1] => 3 [2] => 5 ) )
preferences:
63.53 ms | 877 KiB | 4 Q