protected function getRegionCodeForShortNumberFromRegionList(PhoneNumber $number, $regionCodes)
{
if (count($regionCodes) == 0) {
return null;
} elseif (count($regionCodes) == 1) {
return $regionCodes[0];
}
$nationalNumber = $this->getNationalSignificantNumber($number);
foreach ($regionCodes as $regionCode) {
$phoneMetadata = $this->getMetadataForRegion($regionCode);
if ($phoneMetadata !== null && $this->matchesPossibleNumberAndNationalNumber($nationalNumber, $phoneMetadata->getShortCode())) {
// The number is valid for this region.
return $regionCode;
}
}
return null;
}