protected function getSiteInfoFromQueryParam($idSites, $_restrictSitesToLogin)
    {
        $websiteIds = Site::getIdSitesFromIdSitesString($idSites, $_restrictSitesToLogin);

        $timezone = false;
        if (count($websiteIds) == 1) {
            $timezone = Site::getTimezoneFor($websiteIds[0]);
        }

        $idSiteIsAll = $idSites == Archive::REQUEST_ALL_WEBSITES_FLAG;

        return [$websiteIds, $timezone, $idSiteIsAll];
    }