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<?php class Foo { protected function order($a, $b) { if ($a == $b) { return 0; } return ($a < $b) ? -1 : 1; } public function sortStuff($arr) { usort($arr, [$this, 'order']); return $arr; } } $f = new Foo(); print_r($f->sortStuff([5, 6, 8, 3, 7, 9]));
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 ( [0] => 3 [1] => 5 [2] => 6 [3] => 7 [4] => 8 [5] => 9 )

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