Finding Next auto increment id using PHP for Joomla

Code to get the next value of autoincrement for a table being used by joomla

            $query = "SELECT `AUTO_INCREMENT` FROM  INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = '{$databaseName}' AND TABLE_NAME = CONCAT('{$prefix}','stride_data')";
            $db->setQuery($query);
            $db->query();
            $NextId = $db->loadAssocList();
            //echo $NextId[0][AUTO_INCREMENT];