Register::checkPhone

static function checkPhone(&$item)
{
	$phoneCountry = $item["PHONE_COUNTRY"] ?? "";
	$phoneNumber = BitrixMainPhoneNumberParser::getInstance()->parse($item["PHONE"], $phoneCountry);

	if ($phoneNumber->isValid())
	{
		$item["PHONE_NUMBER"] = $phoneNumber->format(BitrixMainPhoneNumberFormat::E164);
		return true;
	}

	return false;
}