PHP 表格 post 提交 接受

<form action="<?php  echo site_url('home/order/sned_order'); ?>" method="post" >
<table class='cart-table' border=0>
<thead>
<tr>
<th width='35%'>项目</th>
<th width='15%'>状态</th>
<th width='15%'>类型/数量</th>
<th width='10%'>单价</th>
<th width='10%'>小计</th>
<th width='10%'>操作</th>
</tr>
</thead>

<?php  for($i=0;$i<count($db_cart);$i++){?>
<tr>
<td>
<a href="<?php echo site_url('home/index/goods_info/'.$db_cart[$i]['goods_id']); ?>"><?php echo $db_cart[$i]['name']; ?></a>
</td>
<td>未支付</td>
<td class='goods-num'>
<a href="#" class='reduce' ss="<?php echo  $db_cart[$i]['goods_id'] ?>" id="reduce_<?php echo $db_cart[$i]['id']; ?>"></a>
<input class="val_num" ss="<?php echo  $db_cart[$i]['goods_id'] ?>" id="num_<?php echo $db_cart[$i]['id']; ?>" type="text" value="<?php echo $db_cart[$i]['goods_num']; ?>"  />
<a href="#"  class='add' ss="<?php echo  $db_cart[$i]['goods_id'] ?>" id="add_<?php echo $db_cart[$i]['id']; ?>"></a>
</td>
<td ><span style="margin-left:15px;" id="price_<?php echo $db_cart[$i]['id']; ?>"><?php echo $db_cart[$i]['price']; ?></span></td>
<td ><span style="margin-left:10px;" class="sum_money_<?php echo $i+1 ?>  index_money" id="sum_<?php echo $db_cart[$i]['id']; ?>"><?php echo $db_cart[$i]['price']*$db_cart[$i]['goods_num']; ?></span></td>
<td ><a href="#" style="margin-left:10px;">删除</a></td>
</tr>
  <input type="hidden" id="shop_id"   name="shop_id[]" value="<?php echo $db_cart[$i]['goods_id']; ?>" />

<?php } ?>
<tr>
<td colspan="6" style="text-align: right;"><span id="count_money" style="font-size:16px;color:red;margin-right:15px;">总金额:  ￥<strong ><span id="count_sum_money"></span></strong></span></td>
<input type="hidden" id="shop_sum_money" name="shop_sum_money"   />
</tr>
</tbody>
</table>
</form>

Array
(
[shop_id] => Array
(
[0] => 5
[1] => 4
)
)