2018-2-26 php、mysql数据库制作简单的商城购物车

  今天整理了一下利用php和mysql数据库实现简单的购物车功能,主要用到的mysql表有以下几个:

login:

orders:

orderdetails:

fruit:

    要制作商城,首先需要一个登陆页面:

代码如下:

 1 <!doctype html>
 2 <html>
 3 <head>
 4 <meta charset="utf-8">
 5 <title>无标题文档</title>
 6 </head>
 7 
 8 <body>
 9     <form action="dengluchuli.php" method="post" >        
10         <table >
11             <tr>
12                 <td>用户名:<input type="text" name="uid"></td>
13                 
14             </tr>
15             <tr>
16                 <td>密码:<input type="text" name="pwd"></td>
17             </tr>
18         </table>
19         <input type="submit" value="登录"  id="denglu_div4">    
20     </form>
21 </body>
22 </html>

点击“登录”按钮,跳转到登录页面的处理页面dengluchuli.php处理登录页面的信息:

 1  <?php
 2   session_start(); //开启session 必须要写到第一行
 3   $uid=$_POST["uid"];    //从登录页面获取到用户名和密码
 4   $pwd=$_POST["pwd"];
 5   //连接数据库
 6   $db=new MySQLi("localhost","root","","z_gwc");
 7   !mysqli_connect_error() or die("连接错误");
 8   $db->query("set names utf8");
 9   //查询密码
10   $sql="select password from login where username='{$uid}'";
11   $result=$db->Query($sql);
12   $arr=$result->fetch_all();
13   if($arr[0][0]==$pwd && !empty($pwd)) //判断所填写的密码和取到的密码是一样的,而且密码不能为空
14   {
15      //定义用户uid为超全局变量
16      $_SESSION["uid"]=$uid;
17      //跳转页面
18      header("location:index1.php");
19  }
20  else
21  {
22      echo"登录失败";
23  }

登录成功后,登录到商品界面,商品界面代码:

 1 <!--这是展示商品的页面-->
 2 <?php
 3 session_start();//开始
 4 //连接数据库
 5 $db=new MySQLi("localhost","root","","z_gwc");
 6 !mysqli_connect_error() or die("连接失败");
 7 $db->query("set names utf8");
 8 //获取传值
 9 $ids=$_GET["ids"];
10 $uid=$_SESSION["uid"];    //用户账号
11 //查询商品表
12 $sql="select * from fruit";
13 $res=$db->query($sql);
14 $attr=$res->fetch_all();
15 $sql="select Code from orders where UserName ='$uid'";
16 $res=$db->query($sql);
17 $dhattr=$res->fetch_all();//单号数组
18 $dhStr="";
19 //数组遍历,转为字符串
20 foreach($dhattr as $v){
21     $dhStr=$dhStr.$v[0]."','";
22 }
23 $dhStr=substr($dhStr,0,-3);//截取字符串
24 $sql="select FruitCode,count(Count) from orderDetails where OrderCode in('$dhStr') group by FruitCode" ;
25 $res=$db->query($sql);
26 $spattr=$res->fetch_all();//购物车水果信息数组
27 $strPice=0;
28 foreach($attr as $v){
29     foreach($spattr as $v1){
30         if($v[0]==$v1[0]){
31             $strPice=$strPice+$v[2]*$v1[1];
32         }
33     }
34 }
35 ?>
36 <!doctype html>
37 <html>
38 <head>
39 <meta charset="utf-8">
40 <title>无标题文档</title>
41 </head>
42 
43 <body>
44 <a href="Login.php">登录</a>
45 <h1>大苹果购物网</h1>
46 <div>
47     <a href="#">浏览商品</a>&nbsp;&nbsp;
48     <a href="ViewAccount.php">查看账户</a>&nbsp;&nbsp;
49     <!--将商品总价传到购物车页面-->
50     <a href="ViewCart.php?strpice=<?php echo $strPice ?>&ids=<?php echo $ids ?>">查看购物车</a>
51 </div>
52 <div>
53     购物车中有<span id="spnum"><?php echo count($spattr); ?></span>种商品,总价格:<span id="sppice"><?php echo $strPice; ?></span>元。
54 </div>
55 
56 <table width="100%" border="1">
57     <tr>
58         <th>代号</th>
59         <th>水果名称</th>
60         <th>水果价格</th>
61         <th>原产地</th>
62         <th>货架</th>
63         <th>库存量</th>
64         <th>操作</th>
65     </tr>
66     <?php
67         foreach($attr as $k=>$v){?>
68             <tr>
69                 <td><?php echo $v[0]; ?></td>
70                 <td><?php echo $v[1]; ?></td>
71                 <td><?php echo $v[2]; ?></td>
72                 <td><?php echo $v[3]; ?></td>
73                 <td><?php echo $v[4]; ?></td>
74                 <td><?php echo $v[5]; ?></td>
75                 <td><form action="add.php?uid=<?php echo $uid; ?>" method="post">
76                     <input type="hidden" name="ids"
77                     value="<?php echo $v[0]; ?>">
78                     <button>购买</button>
79                     
80                 </form></td>
81             </tr>
82         <?php }
83     ?>
84     <span><?php echo $_GET["kc"] ?></span>
85 </table>
86 </body>
87 </html>

商品页面展示:

点击“购买”,跳到add.php处理界面,将购买信息填入“购物车”,:

<?php
    session_start();//开始
    //连接数据库
    $db=new MySQLi("localhost","root","","z_gwc");
    !mysqli_connect_error() or die("连接失败");
    $db->query("set names utf8");
    //获取传值
    $ids=$_POST["ids"];
    $uid=$_SESSION["uid"];
    $date=date("Y-m-d h:i:s");//获取时间
    $sql="select numbers from fruit where ids='$ids'";
    $res=$db->query($sql);
    $att=$res->fetch_row();
    foreach($att as $v){
        if($v>0){  //条件判断
            $sql="insert into orders values('$uid"."$date','$uid','$date')";
            $db->query($sql);
            $sql="insert into orderdetails  values('','$uid"."$date','$ids',1)";
            $db->query($sql);
            header("location:index1.php?ids=$ids");
        }else{
            header("location:index1.php?kc=库存不足");
        }
    }    
?>

如点击“桔子”后面的购买,发生如下变化:

此时购物车页面:

购物车代码:

<!--这是购物车页面-->
<?php
session_start();//开始
//连接数据库
$db=new MySQLi("localhost","root","","z_gwc");
!mysqli_connect_error() or die("连接失败");
$db->query("set names utf8");
$strpice=$_GET["strpice"];//接收从index.php传过来的商品总价
$ids=$_GET["ids"];
$dlStr=$_SESSION["dlStr"];//超全局
//查询数据
$sql="select a.ids,".
    "a.ordercode,".
    "b.name,".
    "b.price,".
    "count(a.count) ".
    "from orderdetails as a ".
    "join fruit as b ".
    "on a.fruitcode=b.ids group by b.name;";
    $res=$db->query($sql);
    $spattr=$res->fetch_all();
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>购物车</title>
</head>

<body>
<a href="Login.php">登录</a>
<h1>大苹果购物网</h1>
<div>
    <a href="index1.php">浏览商品</a>&nbsp;&nbsp;
    <a href="ViewAccount.php">查看账户</a>&nbsp;&nbsp;
    <a href="ViewCart.php">查看购物车</a>&nbsp;&nbsp;
</div>

<table width="100%" border="1">
    <tr>
        <th>商品名称</th>
        <th>商品单价</th>
        <th>购买数量</th>
        <th>操作</th>
    </tr>
    <?php foreach($spattr as $v){ ?>
        <tr>
            <td><?php echo $v[2]; ?></td>
            <td><?php echo $v[3]; ?></td>
            <td><?php echo $v[4]; ?></td>
            <td><a href="../gouwuchegai/adf.php?id=<?php echo 1234 ?>"></a>
                <form action="delchuli.php?name=<?php echo $v[2]; ?>" method="post">
                    <input type="hidden" name="orderCode"
                    value="<?php echo $v[1]; ?>">
                    <button>删除</button>
                </form>
            </td>
        </tr>
    <?php }
    ?>
</table>
<a href="dingdanchuli.php?strpice=<?php echo $strpice ?>&ids=<?php echo $ids ?>">提交订单</a>
</body>
</html>

点击“提交订单”,跳到订单处理页面dingdanchuli.php     将订单提交,删除订单信息,商品库存减少:

<?php
    session_start();
    //连接数据库
    $db=new MySQLi("localhost","root","","z_gwc");
    !mysqli_connect_error() or die("连接失败");
    $db->query("set names utf8");
    $uid=$_SESSION["uid"];//获取超全局变量uid
    $strpice=$_GET["strpice"];//这是商品传过来的总价
    $ids=$_GET["ids"];
    $dlStr=$_SESSION["dlStr"];//余额
    /*sql语句查询订单号*/
    $sql="select code from orders where username='$uid'";
    $res=$db->query($sql);
    $codstr=$res->fetch_all();
    $jg="";
    if($dlStr>=$strpice){
        $jg="提交成功";
        foreach($codstr as $v){
            $sql="update login set account =account-$strpice where username='$uid'";
            $db->query($sql);
            $sql="update fruit set numbers=numbers-1 where ids='$ids'";
            $db->query($sql);
            //删除orders表中内容
            $sql="delete from orders where code='$v[0]'";
            $db->query($sql);
            //删除orderdetails表中的内容
            $sql="delete from orderdetails where ordercode='$v[0]'";
            $db->query($sql);
        }
    }else{
        $jg="余额不足";
    }
    //跳转页面
    header("location:ViewAccount.php?jg=$jg");
?>

显示余额的页面:

代码:

<!--这个页面显示账户余额-->
<?php
    session_start();//开始
    $jg=$_GET["jg"];//获取从dingdanchuli.php接收的结果值
    $uid=$_SESSION["uid"];//超全局变量uid
    /*连接数据库*/
    $db=new MySQLi("localhost","root","","z_gwc");
    !mysqli_connect_error() or die("连接失败");
    $db->query("set names utf8");
    /*sql语句查询余额*/
    $sql="select * from login where username='$uid'";
    $res=$db->query($sql);//执行sql语句
    $dlattr=$res->fetch_row();//获取一维数组结果集
    $_SESSION["dlStr"]=$dlattr[3];//设置全局变量余额dhStr
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>余额</title>
</head>
<body>
<a href="Login.php">登录</a>
<h1>大苹果购物网</h1>
<div>
    <a href="index1.php">浏览商品</a>&nbsp;&nbsp;
    <a href="ViewAccount.php">查看账户</a>&nbsp;&nbsp;
    <a href="ViewCart.php">查看购物车</a>&nbsp;&nbsp;
</div>
<span>您的账户中还剩余<?php echo  $dlattr[3]; ?>元。</span><br>
<span style="color:red"><?php echo $jg ?></span>
</body>
</html>

 点击“提交订单”后,商品页面变化:

购物车页面清空,变化如下:

 

余额页面变化:

 

posted @ 2018-02-26 21:00  凉冰婵  阅读(6254)  评论(1编辑  收藏  举报