stripe-payments Stripe Add multiple card to Same User How to retrive customer And add cards in Stripe

Example

public function addCard($cust_id, $token)
{
    $retriveResult=Customer::retrieve($cust_id);
    $tokendata = Token::retrieve($token);
    $newcard = $tokendata['card'];
    $flag = 1;

    foreach ($retriveResult['sources']['data'] as $card) {
        if($card['fingerprint'] === $newcard['fingerprint'])
        {
            $cardid = $card['id'];
            $flag = 0;
            break;
        }
    }

    if($flag)
    {
        $savecard = $retriveResult->sources->create(array("source" =>$token));
        $cardid = $savecard['id'];
    }
    return $cardid;
}