Piwik\Plugins\UserCountry\API::getNumberOfDistinctCountries PHP Метод

    public function getNumberOfDistinctCountries($idSite, $period, $date, $segment = false)
    {
        Piwik::checkUserHasViewAccess($idSite);
        $archive = Archive::build($idSite, $period, $date, $segment);
        return $archive->getDataTableFromNumeric(Archiver::DISTINCT_COUNTRIES_METRIC);
    }