엑셀 다운 문의

// MS엑셀 XLS 데이터로 다운로드 받음
if ($csv == 'xls')
{
    $fr_date = date_conv($fr_date);
    $to_date = date_conv($to_date);

    $sql = " select * from {$g5['g5_shop_order_table']} ";
    
    if($fr_date && $to_date) {
        $sql .= " and od_time between '$fr_date 00:00:00' and '$to_date 23:59:59' ";
    }

    $sql .= " group by od_id order by od_id desc ";

    $result = sql_query($sql);
    $cnt = @sql_num_rows($result);