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<?php $array = [ 'a' => ['a' => 'asd'], 'b' => ['b' => 'bsd'], 'c' => ['c' => 'csd'], ]; foreach ($array as &$item) { unset($item['a']); } var_dump($array);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["a"]=> array(0) { } ["b"]=> array(1) { ["b"]=> string(3) "bsd" } ["c"]=> &array(1) { ["c"]=> string(3) "csd" } }

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