php实现简单加入购物车功能

<h2>购物车中有以下商品：</h2>
<table cellpadding="0" cellspacing="0" border="1" width="100%">
 <tr>
 <td>商品名称</td>
 <td>商品单价</td>
 <td>购买数量</td>
 <td></td>
 </tr>
 <?php
 session_start();
 //$uid=$_SESSION["uid"];
 $arr=array();
 if(!empty($_SESSION["gwc"]))
 {
 $arr=$_SESSION["gwc"];
 }
 include("DADB.class.php");
 $db=new DADB();
 foreach($arr as $v)
 {
 global $db;
 $sql="select * from fruit where ids='{$v[0]}'";
 $att=$db -> Query($sql,1);
 foreach($att as $n)
 {
  echo"<tr>
 <td>{$n[1]}</td>
 <td>{$n[2]}</td>
 <td>{$v[1]}</td>
 <td><a href='shanchu.php?ids={$v[0]}'>删除</a></td>
 </tr>";}
 }
 ?>
</table>
<div>
<a href="gouwuche.php" rel="external nofollow" rel="external nofollow" >查看购物车</a> 
<a href="main.php" rel="external nofollow" rel="external nofollow" >浏览商品</a> 
<a href="zhanghu.php" rel="external nofollow" rel="external nofollow" >查看账户</a> </div> 14 15 </body>