3v4l.org

run code in 500+ PHP versions simultaneously
<?php $x = []; $x[2] = 'a'; $x[1] = 'b'; $x[0] = 'c'; ksort($x); echo json_encode($x);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
["c","b","a"]
preferences:
71.57 ms | 1019 KiB | 4 Q