Faker\Test\Provider\es_ES\PaymentTest::isValidCIFFormat PHP Метод

    function isValidCIFFormat($docNumber)
    {
        return $this->respectsDocPattern($docNumber, '/^[PQSNWR][0-9][0-9][0-9][0-9][0-9][0-9][0-9][A-Z0-9]/') || $this->respectsDocPattern($docNumber, '/^[ABCDEFGHJUV][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/');
    }