3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array = ["600" => 0, "aaa" => 1]; ksort($array, SORT_REGULAR); var_dump($array); var_dump(array_key_first($array) <=> array_key_last($array));
Output for 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
array(2) { [600]=> int(0) ["aaa"]=> int(1) } int(-1)
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34
array(2) { ["aaa"]=> int(1) [600]=> int(0) } int(1)
Output for 7.4.0 - 7.4.33
array(2) { ["aaa"]=> int(1) [600]=> int(0) } int(-1)
preferences:
1307.25 ms | 1286 KiB | 4 Q