3v4l.org

run code in 300+ PHP versions simultaneously
<?php $l = [ 'a' => 1, 'b' => 2, 'c' => 2, 'd' => 4, 'e' => 5, 'f' => 5 ]; array_multisort($l, SORT_DESC, array_keys($l)); var_dump($l);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(6) { ["e"]=> int(5) ["f"]=> int(5) ["d"]=> int(4) ["b"]=> int(2) ["c"]=> int(2) ["a"]=> int(1) }

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280.2 ms | 404 KiB | 335 Q