3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1,2,3,4,5,6,1,2,3,4,5,6]; asort($a); print_r($a);
Output for 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 ( [0] => 1 [6] => 1 [1] => 2 [7] => 2 [2] => 3 [8] => 3 [3] => 4 [9] => 4 [4] => 5 [10] => 5 [5] => 6 [11] => 6 )
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
Array ( [6] => 1 [0] => 1 [1] => 2 [7] => 2 [2] => 3 [8] => 3 [3] => 4 [9] => 4 [4] => 5 [10] => 5 [5] => 6 [11] => 6 )
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Array ( [6] => 1 [0] => 1 [7] => 2 [1] => 2 [8] => 3 [2] => 3 [9] => 4 [3] => 4 [4] => 5 [10] => 5 [11] => 6 [5] => 6 )
preferences:
202.93 ms | 402 KiB | 225 Q