3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( '0' => 'z1', '1' => 'Z10', '2' => 'z12', '3' => 'Z2', '4' => 'z3', ); asort($a, SORT_STRING|SORT_FLAG_CASE|SORT_NATURAL); var_dump($a);
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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(5) { [0]=> string(2) "z1" [3]=> string(2) "Z2" [4]=> string(2) "z3" [1]=> string(3) "Z10" [2]=> string(3) "z12" }
preferences:
200.44 ms | 404 KiB | 243 Q