public static function getTopActivityUrl($domain, $fromDate, $toDate, $aggregation, $dealId = null) { $topActivities = MongoUtils::getTopActivityUrlData($domain, $fromDate, $toDate, $aggregation, $dealId); if ($topActivities['data'] && count($topActivities['data']) > 0) { return $topActivities['data'][0]['url']; } else { return null; } }