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run code in 300+ PHP versions simultaneously
<?php $as = [ [3, 4, 2, 5, 1], ['p', 'h', 'p'], [5, 2, 1, 4, 3], ]; $x = sort_foreach($as); $y = sort_array_map($as); $z = sort_array_walk($as); var_dump($x === $y && $x === $z && $y === $z); //var_dump($x, $y, $z); function sort_foreach(array $as) { foreach ($as as $k => $a) { sort($a); $as[$k] = $a; } return $as; } function sort_array_map(array $as) { return array_map(function ($a) { sort($a); return $a; }, $as); } function sort_array_walk(array $as) { array_walk($as, function (&$a) { sort($a); }); return $as; }
Output for git.master, git.master_jit, rfc.property-hooks
bool(true)

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