    public static function paginated_list($offset, $limit, $order_by_field, $order_by_ascdesc)
    {
        global $DB;
	    global $website;

        $DB->queryLimit(
            '*',
            'nv_block_groups',
            'website = '.protect($website->id),
            $order_by_field.' '.$order_by_ascdesc,
            $offset,
            $limit
        );
        $rs = $DB->result();
        $total = $DB->foundRows();

        return array($rs, $total);
    }

The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.