mapping associative array with another associative array

I found a way to solve my problem, but I want to see if there is any better or clear solution for this. I have two associative arrays like this:

$person= [
    "A" => [
            "sur" => "a",
            "fir" => "andras"
            ],
    "C" =>  [
            "sur" => "b",
            "fir" => "balint"
            ]
];
$data = [
    "A" => ["011", "012", "013"],
    "C" => ["021", "022"]
];

I want to map the two arrays if their keys are equal. So the result should look like this:

$person= [
    "A" => [
            "sur" => "a",
            "fir" => "andras",
            "tel" => ["011", "012", "013"]
            ],
    "C" =>  [
            "sur" => "b",
            "fir" => "balint",
            "tel" => ["021", "022"]
            ]
];

My code:

foreach ( array_intersect_key(array_keys($data,$person)) as $id) {
    $person[$id]['tel'] = $data[$id];
}