Regex Credit Card Brand ?

public function getSupportedBrands()
    {
        return array(
            static::BRAND_VISA => '/^4\d{12}(\d{3})?$/',
            static::BRAND_MASTERCARD => '/^(5[1-5]\d{4}|677189)\d{10}$/',
            static::BRAND_DISCOVER => '/^(6011|65\d{2}|64[4-9]\d)\d{12}|(62\d{14})$/',
            static::BRAND_AMEX => '/^3[47]\d{13}$/',
            static::BRAND_DINERS_CLUB => '/^3(0[0-5]|[68]\d)\d{11}$/',
            static::BRAND_JCB => '/^35(28|29|[3-8]\d)\d{12}$/',
            static::BRAND_SWITCH => '/^6759\d{12}(\d{2,3})?$/',
            static::BRAND_SOLO => '/^6767\d{12}(\d{2,3})?$/',
            static::BRAND_DANKORT => '/^5019\d{12}$/',
            static::BRAND_MAESTRO => '/^(5[06-8]|6\d)\d{10,17}$/',
            static::BRAND_FORBRUGSFORENINGEN => '/^600722\d{10}$/',
            static::BRAND_LASER => '/^(6304|6706|6709|6771(?!89))\d{8}(\d{4}|\d{6,7})?$/',
        );
    }