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<?php $arr = array("A" => "aa", "B" => ["A" => "aaa", "B" => "bb"], "C" => "cc", "D" => ["E" =>"ee"]); function array_filter_recursive(array &$array, callable $callback) { foreach ($array as $key => &$value) { if ($callback($key, $value)) unset($array[$key]); else if (is_array($value)) array_filter_recursive($value, $callback); } } function sanitizedArray(&$arr, $restricted, $keys = false) { foreach($restricted as $val) { array_filter_recursive($arr, function($k, $v) use ($val, $keys) {return $keys ? ($val === $k) : ($val === $v);}); } } sanitizedArray($arr, ["A","E", "D"], true); print_r($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [B] => Array ( [B] => bb ) [C] => cc )

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