购物车练习

登陆页面

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="../../class/jquery-1.11.2.min.js"></script>

<title>无标题文档</title>
</head>

<body>
<div>用户名：<input type="text" id="uid" /></div>
<div>密码：<input type="text" id="pwd" /></div>
<input type="button" value="登陆" id="btn" />

<script type="text/javascript">
$("#btn").click(function(){
    var uid = $("#uid").val();
    var pwd = $("#pwd").val();
    
    $.ajax({
        url:"loginchuli.php",
        data:{u:uid,p:pwd},
        type:"POST",
        dataType:"TEXT",
        success: function(data){
            if(data.trim()=="OK"){
                window.location.href="main.PHP";
                }else{
                alert("用户名或密码错误");
                }
            }
        })
    })
</script>
</body>
</html>
登陆

登陆处理

 1 <?php
 2 session_start();
 3 include("../../class/dbda.class.php");
 4 $db = new DBDA();
 5 
 6 $uid = $_POST["u"];
 7 $pwd = $_POST["p"];
 8 
 9 $sql = "select password from login where username='{$uid}'";
10 $mm = $db->StrQuery($sql);
11 if($mm == $pwd && $pwd != ""){
12     $_SESSION["uid"]=$uid;
13     echo "OK";
14     }else{
15     echo "NO";
16     }
登陆处理

主页面

 1 <?php
 2 session_start();
 3 include("../../class/dbda.class.php");
 4 $db = new DBDA();
 5 ?>
 6 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 7 <html xmlns="http://www.w3.org/1999/xhtml">
 8 <head>
 9 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
10 <title>无标题文档</title>
11 <style type="text/css">
12 .list{ 100%; height:30px; margin-top:10px; text-align:center; line-height:30px; vertical-align:middle}
13 </style>
14 </head>
15 
16 <body>
17 
18 <div style="100%; height:100px; background-color:#06F">
19     <h1 style="float:left">大苹果购物网</h1>
20     <a href="zhuxiao.php" style="float:right; margin-top:40px">注销</a>
21 </div><br />
22 <div style="100%; height:600px">
23     <div id="left" style="20%; float:left">
24         <a href="main.php"><div class="list">浏览商品</div></a>
25         <a href=""><div class="list">查看账户</div></a>
26         <a href="gouwuche.php"><div class="list">查看购物车</div></a>
27     </div>
28     <div id="right" style="80%; float:left">
29         <?php
30         $agwc = array();
31         if(!empty($_SESSION["gwc"])){
32             $agwc = $_SESSION["gwc"];
33             }
34         $zhonglei = count($agwc);
35         $sum = 0;
36         foreach($agwc as $v){
37             $sql = "select price from fruit where ids='{$v[0]}'";
38             $danjia = $db->StrQuery($sql);
39             $sum = $sum +$danjia*$v[1];
40             
41             }
42         echo "<div>购物车中有：{$zhonglei}种商品，总价为{$sum}元</div>";
43         
44         ?>
45         <table width="100%" border="1" cellpadding="0" cellspacing="0">
46         <tr>
47             <td>代号</td>
48             <td>水果名称</td>
49             <td>水果价格</td>
50             <td>原产地</td>
51             <td>库存量</td>
52             <td>操作</td>
53         </tr>
54         <?php
55         
56         $sql = "select * from fruit";
57         $attr = $db->Query($sql);
58         
59         foreach($attr as $v){
60             echo "<tr>
61             <td>{$v[0]}</td>
62             <td>{$v[1]}</td>
63             <td>{$v[2]}</td>
64             <td>{$v[3]}</td>
65             <td>{$v[4]}</td>
66             <td><a href='goumai.php?code={$v[0]}'>购买</a></td>
67         </tr>";
68             
69             }
70         
71         ?>
72         
73         
74         </table>
75     
76     </div>
77 </div>
78 </body>
79 </html>
主页面

购买处理

 1 <?php
 2 session_start();
 3 $code = $_GET["code"];
 4 
 5 if(empty($_SESSION["gwc"])){
 6     //第一次点击购买
 7     $attr = array(
 8         array($code,1)
 9     );
10     $_SESSION["gwc"] = $attr;
11     
12     }else{
13     //不是第一次购买
14     $attr = $_SESSION["gwc"];
15     $bs = 0;
16     foreach($attr as $k=>$v){
17         if($v[0]==$code){
18             $bs=1;
19             $attr[$k][1] = $attr[$k][1]+1;
20             
21             }
22         }
23     //如果没有在数组里面出现
24     if($bs==0){
25         $shuzu = array($code,1);
26         $attr[] = $shuzu;
27         }
28     $_SESSION["gwc"]=$attr;
29     }
30 header("location:main.php");
购买处理

购物车页面

 1 <?php
 2 session_start();
 3 ?>
 4 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 5 <html xmlns="http://www.w3.org/1999/xhtml">
 6 <head>
 7 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 8 <script src="../../class/jquery-1.11.2.min.js"></script>
 9 <title>无标题文档</title>
10 <style type="text/css">
11 .list{ 100%; height:30px; margin-top:10px; text-align:center; line-height:30px; vertical-align:middle}
12 </style>
13 </head>
14 
15 <body>
16 <div style="100%; height:100px; background-color:#06F">
17     <h1 style="float:left">大苹果购物网</h1>
18     <a href="zhuxiao.php" style="float:right; margin-top:40px">注销</a>
19 </div><br />
20 <div style="100%; height:600px">
21     <div id="left" style="20%; float:left">
22         <a href="main.php"><div class="list">浏览商品</div></a>
23         <a href=""><div class="list">查看账户</div></a>
24         <a href="gouwuche.php"><div class="list">查看购物车</div></a>
25     </div>
26     <div id="right" style="80%; float:left">
27         <table width="100%" border="1" cellpadding="0" cellspacing="0">
28         <tr>
29             <td>商品名称</td>
30             <td>商品单价</td>
31             <td>购买数量</td>
32             <td>操作</td>
33         </tr>
34         <?php
35         include("../../class/dbda.class.php");
36         $db = new DBDA();
37         $attr = array();
38         if(!empty($_SESSION["gwc"])){
39             $attr = $_SESSION["gwc"];
40             }
41         foreach($attr as $k=>$v){
42             $sql = "select name,price from fruit where ids='{$v[0]}'";
43             $ashuiguo = $db->Query($sql);
44             
45             echo "<tr><td>{$ashuiguo[0][0]}</td><td>{$ashuiguo[0][1]}</td><td>{$v[1]}</td><td><a href='shanchu.php?sy={$k}'>删除</a></td></tr>";
46             }    
47         
48         ?>
49         
50         </table>
51         <div id="tj">提交订单</div><div id="ts"></div>
52     
53     </div>
54 </div>
55 
56 <script type="text/javascript">
57 $("#tj").click(function(){
58     $.ajax({
59         url:"dingdan.php",
60         dataType:"TEXT",
61         success: function(data){
62             if(data.trim()=="OK"){
63                 alert("购买成功");
64                 }else if(data.trim()=="YEBUZU"){
65                 $("#ts").html("余额不足");
66                 $("#ts").css("color","red");
67                 }else{
68                 $("#ts").html(data);
69                 $("#ts").css("color","red");
70                 }
71             }
72         
73         })
74     })
75 </script>
76 </body>
77 </html>
购物车

删除

 1 <?php
 2 session_start();
 3 $sy = $_GET["sy"];
 4 
 5 $attr = $_SESSION["gwc"];
 6 
 7 if($attr[$sy][1]>1){
 8     $attr[$sy][1] = $attr[$sy][1]-1;
 9     }else{
10     unset($attr[$sy]);
11     $attr = array_values($attr);
12     }
13 $_SESSION["gwc"] = $attr;
14 
15 header("location:gouwuche.php");
删除

订单处理

 1 <?php
 2 session_start();
 3 include("../../class/dbda.class.php");
 4 $db = new DBDA();
 5 $uid = $_SESSION["uid"];
 6 $attr = array();
 7 if(!empty($_SESSION["gwc"])){
 8     $attr = $_SESSION["gwc"];
 9     }
10 //看两个条件是否都满足
11 $bs = true;
12     
13 //判断余额是否满足
14 $syue = "select account from login where username='{$uid}'";
15 $yue = $db->StrQuery($syue);
16 
17 $sum = 0;
18 foreach($attr as $v){
19     $sql = "select price from fruit where ids='{$v[0]}'";
20     $danjia = $db->StrQuery($sql);
21     $sum = $sum +$danjia*$v[1];
22     }
23 
24 if($yue<$sum){
25     $bs = false;
26     echo "YEBUZU";
27     exit;
28     }
29     
30 //判读库存是否满足
31 foreach($attr as $v){
32     $skucun = "select name,numbers from fruit where ids='{$v[0]}'";
33     $akucun = $db->Query($skucun);
34     if($akucun[0][1]<$v[1]){
35         $bs = false;
36         echo "{$akucun[0][0]}库存不足!";
37         exit;
38         }
39     }
40 
41 
42 //添加订单，减库存，减余额
43 if($bs){
44     //减库存
45     foreach($attr as $v){
46         $sql = "updata fruit set numbers = numbers-{$v[1]} where ids='{$v[0]}'";
47         $db->Query($sql,0);
48         }
49     
50     //减余额
51     $jianyue = "updata login set account=account-{$sum} where username='{$uid}'";
52     $db->Query($jianyue,0);
53     //添加订单
54     $dingdanhao = $uid+date("YmdHis");
55     $t = time();
56     $sorder = "insert into orders values('{$dingdanhao}','{$uid}','{$t}')";
57     $db->Query($sorder,0);
58     
59     foreach($attr as $v){
60         $sxq = "insert into orderdetails values('','{$dingdanhao}','{$v[0]}','{$v[1]}')";
61         $db->Query($sxq,0);
62         }
63     
64     }
65     echo "OK";
订单处理
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原文地址：https://www.cnblogs.com/The-second/p/6065125.html