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php - Using preg_match on a multidimensional array to return key values arrays

I have an array that is structured as such:

$data = array(
    "abc"=>array(
            "label" => "abc",
            "value" => "def",
            "type" => "ghi",
            "desc" => "jkl",
            ),
    "def"=>array(
            "label" => "mno",
            "value" => "qrs",
            "type" => "tuv",
            "desc" => "wxyz",
            ),
    );

I want to use preg_match with a foreach loop to perform a search on the arrays contained in $data and return the nested arrays of key value pairs.

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for the googlers out there here's the better code

$data = <as above>
$pattern = "/whatever/";

$matches = array_filter($data, function($a) use($pattern)  {
    return preg_grep($pattern, $a);
});

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