배송비 관련 질문입니다.

<!-- 장바구니 시작 { --><script src="<?php echo G5_JS_URL; ?>/shop.js"></script><div id="sod_bsk">    <form name="frmcartlist" id="sod_bsk_list" method="post" action="<?php echo $cart_action_url; ?>">    <div class="tbl_head01 tbl_wrap">        <table>        <thead>        <tr>            <th scope="col">이미지</th>            <th scope="col">처방명</th>            <th scope="col">처방건수</th>            <th scope="col">처방가격</th>            <th scope="col">소계</th>            <!--<th scope="col">포인트</th>            <th scope="col">배송비</th>-->            <th scope="col">                <label for="ct_all" class="sound_only">상품 전체</label>                <input type="checkbox" name="ct_all" value="1" id="ct_all" checked="checked">            </th>        </tr>        </thead>        <tbody>        <?php        $tot_point = 0;        $tot_sell_price = 0;        // $s_cart_id 로 현재 장바구니 자료 쿼리        $sql = " select a.ct_id,                        a.it_id,                        a.it_name,                        a.ct_price,                        a.ct_point,                        a.ct_qty,                        a.stat,                        a.ct_status,                        a.ct_send_cost,                        a.it_sc_type,                        b.chname,            b.byg                   from {$g5['g5_shop_cart_table']} a left join ib_order b on ( b.stat=a.ct_stat or b.stat=a.it_id )                  where a.od_id = '$s_cart_id'";        $sql .= " group by it_id ";        $sql .= " order by ct_id ";        $result = sql_query($sql);        $it_send_cost = 0;        for ($i=0; $row=sql_fetch_array($result); $i++)        {        //print_r($row);             // 합계금액 계산            $sql = " select SUM(IF(io_type = 1, (io_price * ct_qty), ((ct_price + io_price) * ct_qty))) as price,                            SUM(ct_point * ct_qty) as point,                            SUM(ct_qty) as qty                        from {$g5['g5_shop_cart_table']}                        where it_id = '{$row['it_id']}'                          and od_id = '$s_cart_id' ";            $sum = sql_fetch($sql);            if ($i==0) { // 계속쇼핑                $continue_ca_id = $row['ca_id'];            }            $a1 = '<a href="./item.php?it_id='.$row['it_id'].'"><b>';            $a2 = '</b></a>';            //$image = get_it_image($row['it_id'], 70, 70);   if($row[chname]){    $image = "<img src='../wontang/attfile/$row[byg].jpg' height='70px' width='70px'>";   } else {       $image = get_it_image($row['it_id'], 70, 70);   }   $stat = "";      if($row[ct_stat]) $stat = $row[ct_stat];      else $stat = $row[it_id];            $it_name = $a1 . stripslashes($row['it_name']) . $a2;            $it_options = print_item_options($row['it_id'], $s_cart_id);            if($it_options) {                $mod_options = '<div class="sod_option_btn"><button type="button" class="mod_options">선택처방수정</button></div>';                //$it_name .= '<div class="sod_opt">'.$it_options.'</div>';            }            // 배송비            switch($row['ct_send_cost'])            {                case 1:                    $ct_send_cost = '착불';                    break;                case 2:                    $ct_send_cost = '무료';                    break;                default:                    $ct_send_cost = '선불';                    break;            }            // 조건부무료            if($row['it_sc_type'] == 2) {                $sendcost = get_item_sendcost($row['it_id'], $sum['price'], $sum['qty'], $s_cart_id);                if($sendcost == 0)                    $ct_send_cost = '무료';            }            $point      = $sum['point'];            $sell_price = $sum['price'];        ?>        <tr>            <td class="sod_img"><?php echo $image; ?></td>            <td>                <input type="hidden" name="it_id[<?php echo $i; ?>]"    value="<?php echo $row['it_id']; ?>">                <input type="hidden" name="it_name[<?php echo $i; ?>]"  value="<?php echo get_text($row['it_name']); ?>">                <?//php echo $it_name; ?>    <? if($row[chname]){  echo $row[chname]."&nbsp;&nbsp;&nbsp;<a href='javascript:' onclick=\"javascript:window.open('won.cart.php?stat=$stat','cartinfo','width=680,height=838,scrollbars=yes');\"><img src='../shop/img/btn_jumuninfo.gif' border=0 align=absmiddle></a>"; } else{  echo $it_name.$mod_options; } ?>            </td>            <td class="td_numbig"><?php echo number_format($sum['qty']); ?></td>            <td class="td_numbig"><?php echo number_format($row['ct_price']); ?></td>            <td class="td_numbig"><span id="sell_price_<?php echo $i; ?>"><?php echo number_format($sell_price); ?></span></td>            <!--<td class="td_numbig"><?php echo number_format($point); ?></td>            <td class="td_dvr"><?php echo $ct_send_cost; ?></td>-->            <td class="td_chk">                <label for="ct_chk_<?php echo $i; ?>" class="sound_only">상품</label>                <input type="checkbox" name="ct_chk[<?php echo $i; ?>]" value="1" id="ct_chk_<?php echo $i; ?>" checked="checked">            </td>        </tr>        <?php            $tot_point      += $point;            $tot_sell_price += $sell_price;        } // for 끝        if ($i == 0) {            echo '<tr><td colspan="8" class="empty_table">장바구니에 담긴 처방이 없습니다.</td></tr>';        } else {            // 배송비 계산            $send_cost = get_sendcost($s_cart_id, 0);        }        ?>        </tbody>        </table>    </div>    <?php    $tot_price = $tot_sell_price + $send_cost; // 총계 = 주문상품금액합계 + 배송비    $to_price = $tot_sell_price + $send_cost; // 총계 = 주문상품금액합계 $stat2 = $row['stat'];    if ($tot_price > 0 || $send_cost > 0) {    ?>    <dl id="sod_bsk_tot"> <?php if($row['stat']==0) { ?>         <?php if ($send_cost > 0) { // 배송비가 0 보다 크다면 (있다면) ?>        <dt class="sod_bsk_dvr">배송비<? echo $stat2; ?></dt>        <dd class="sod_bsk_dvr"><strong><?php echo number_format($send_cost); ?> 원</strong></dd>        <?php } ?>    <?php } else { ?>    <?php } ?>        <?php        if ($tot_price > 0) {        ?>        <dt class="sod_bsk_cnt">총계 가격</dt>        <dd class="sod_bsk_cnt"><strong><?php echo number_format($tot_price); ?> 원 </strong></dd>        <?php } ?>    </dl>    <?php } ?>