Piwik\Plugins\Referrers\Controller::getReferrersVisitorsByType PHP Method

    protected function getReferrersVisitorsByType($date = false)
    {
        if ($date === false) {
            $date = Common::getRequestVar('date', false);
        }
        // we disable the queued filters because here we want to get the visits coming from search engines
        // if the filters were applied we would have to look up for a label looking like "Search Engines"
        // which is not good when we have translations
        $dataTableReferrersType = Request::processRequest("Referrers.getReferrerType", array('disable_queued_filters' => '1', 'date' => $date));
        $nameToColumnId = array('visitorsFromSearchEngines' => Common::REFERRER_TYPE_SEARCH_ENGINE, 'visitorsFromDirectEntry' => Common::REFERRER_TYPE_DIRECT_ENTRY, 'visitorsFromWebsites' => Common::REFERRER_TYPE_WEBSITE, 'visitorsFromCampaigns' => Common::REFERRER_TYPE_CAMPAIGN);
        $return = array();
        foreach ($nameToColumnId as $nameVar => $columnId) {
            $value = 0;
            $row = $dataTableReferrersType->getRowFromLabel($columnId);
            if ($row !== false) {
                $value = $row->getColumn(Metrics::INDEX_NB_VISITS);
            }
            $return[$nameVar] = $value;
        }
        return $return;
    }