/**
* Returns the country as the numeric ISO 3166-1 code
*
* @throws Omnipay\Common\Exception\InvalidRequestException
*
* @return int ISO 3166-1 numeric country
*/
protected function formatCountry()
{
$country = $this->getCard()->getCountry();
if (!is_null($country) && !is_numeric($country)) {
$iso3166 = new ISO3166();
if (strlen($country) == 2) {
$country = $iso3166->getByAlpha2($country)['numeric'];
} elseif (strlen($country) == 3) {
$country = $iso3166->getByAlpha3($country)['numeric'];
} else {
throw new InvalidRequestException("The country parameter must be ISO 3166-1 numeric, aplha2 or alpha3.");
}
}
return $country;
}