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<?php $a = ['test', 'jura', 'õied', 'Auto']; var_dump($a); natcasesort($a); var_dump($a); var_dump(array_values($a));
Output for 7.3.0 - 7.3.30, 7.4.0 - 7.4.23, 8.0.0 - 8.0.11, 8.1rc1 - rc2
array(4) { [0]=> string(4) "test" [1]=> string(4) "jura" [2]=> string(5) "õied" [3]=> string(4) "Auto" } array(4) { [3]=> string(4) "Auto" [1]=> string(4) "jura" [0]=> string(4) "test" [2]=> string(5) "õied" } array(4) { [0]=> string(4) "Auto" [1]=> string(4) "jura" [2]=> string(4) "test" [3]=> string(5) "õied" }

preferences:
20.95 ms | 460 KiB | 5 Q