Home > Article > Backend Development > PHP implements a multi-functional shopping website
This article mainly introduces how to use PHP to implement a multi-functional shopping website. Interested friends can refer to it. I hope it will be helpful to everyone.
1. Pages that need to be implemented:
Index.aspx: Browse the product page, display the product list, the user can click "Add to shopping cart" ".
ViewCart.aspx: View the shopping cart page, which displays purchased product information. You can click "Delete" and "Submit to add an order to purchase" the product
ViewAccount.aspx: View personal account balance
Login.aspx: Login page
2. Implementation functions:
1. Display product list
2. Implement the purchase function, and dynamically display the quantity of goods in the shopping cart and the total price of the goods when purchasing
3. After clicking to view the shopping cart, the purchased goods will be displayed. Pay attention to the "Purchase Quantity" column. If you click to buy a product multiple times, its "Purchase Quantity" will continue to increase.
4. Delete the purchased items in the shopping cart.
If the "Purchase Quantity" of a product is 1, when you click "Delete", the product will be deleted directly from the shopping cart;
If the "Purchase Quantity" of the product is greater than 1 , when you click "Delete" once, the purchase quantity will be reduced by 1. When the purchase quantity of the product reaches 1, and then click Delete, the product will be deleted
5. After viewing the shopping cart, you can also click "Browse Products" to continue purchasing. And the quantity of goods purchased and the total price are displayed above.
6. After "View Shopping Cart", you can submit the order.
But when submitting an order, the following functions must be completed:
(a) Check whether the user is logged in. If not logged in, go to the Login.aspx page
(b) Check whether the user account balance is sufficient for this purchase
(c) Check whether the inventory quantity is sufficient for this purchase
(d) If all the above conditions are met
i. Deduct the total price of this purchase from the user account
ii. Deduct the purchase quantity of each product from the product inventory
iii. Add it to the order table and order content table Add the product information of this purchase
7. Click View Account to view the user’s account balance
The operation code is as follows:
1. First make a login page: loginpage.php
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="bootstrap/js/jquery-1.11.2.min.js"></script>
<script src="bootstrap/js/bootstrap.min.js"></script>
<link href="bootstrap/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet" type="text/css"/>
</head>
<style>
.title{
margin-left: 750px;
margin-top: 150px;
}
.quanju{
margin-left: 650px;
margin-top: -460px;
}
.name,.pwd{
max-width: 120px;
}
.yangshi1{
margin-top: 200px;
}
.header{
width: 100%;
height: 80px;
background: #e0e0e0;
}
.ps{
margin-left: 100px;
margin-top: -100px;
}
</style>
<body>
<form class="form-horizontal" role="form" action="dengluchuli.php" method="post">
<p class="header">
<img src="img/logo.png" width="200" height="50" />
<p >果 蔬 网</p>
</p>
<h3 class="title">用户登录</h3>
<img src="./img/果蔬专场.jpg" width="500" height="400" class="ps" />
<p class="quanju">
<p class="form-group yangshi1">
<label for="firstname" class="col-sm-2 control-label">用户名:</label>
<p class="col-sm-10">
<input type="text" class="form-control name" name="uid" placeholder="请输入用户名">
</p>
</p>
<p class="form-group yangshi2">
<label for="lastname" class="col-sm-2 control-label">密码:</label>
<p class="col-sm-10">
<input type="text" class="form-control pwd" name="pwd" placeholder="请输入密码">
</p>
</p>
<p class="form-group">
<p class="col-sm-offset-2 col-sm-10">
<p class="checkbox">
<label>
<input type="checkbox">
保存密码 </label>
<label>
<input type="checkbox">
下次自动登录 </label>
</p>
</p>
</p>
<p class="form-group">
<p class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-warning" value="登录" onclick="return login()" >
登录
</button>
</p>
</p>
</p>
</form>
</body>
<script>
function login(){
var uid = document.getElementsByTagName("input")[0].value;
if(uid==""){
alert("请输入用户名!");
return false;
}
var pwd = document.getElementsByTagName("input")[1].value;
if(pwd==""){
alert("请输入密码!");
return false;
}
}
</script>
</html>
The effect is as shown:
2. Create a login processing page: dengluchuli.php
<?php
session_start();
$uid = $_POST["uid"];
$pwd = $_POST["pwd"];
require_once "./DBDA.class.php";
$db = new DBDA();
$sql = "select * from login where username='{$uid}'";
$arr = $db->query($sql,0);
if($arr[0][2]==$pwd && !empty($pwd)){
$_SESSION["uid"]=$uid;
header("location:shopping_list.php");
}else{
echo "登陆失败!";
}
This way you can contact the database. This is the login account and password for the database. Verify the account and password, and then jump to the homepage: shopping_list.php
3. Now make the homepage page: shopping_list. php
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="bootstrap/js/jquery-1.11.2.min.js"></script>
<script src="bootstrap/js/bootstrap.min.js"></script>
<link href="bootstrap/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet" type="text/css"/>
</head>
<body>
<h2 >水果列表</h2>
<?php
session_start();
//1.找出购物车中多少种商品和总价
$uid = $_SESSION["uid"];
if(empty($_SESSION["uid"])){
header("location:loginpage.php");
exit;
}
require_once "./DBDA.class.php";
$db = new DBDA();
//如果购物车有商品，取出值
if(!empty($_SESSION["gwd"])){
$arr = $_SESSION["gwd"];
$sum = 0;
$numbers = count($arr);
foreach($arr as $k=>$v){
//$v[0];//水果名称
//$v[1];//购买数量
$sql = "select * from fruit where ids='{$v[0]}'";
$attr = $db->query($sql,0);
$dj = $attr[0][2]; //单价
$sum = $sum+$dj*$v[1]; //总价=单价*数量
}
}
echo @"<p style='margin-left: 250px'>购物车中商品总数为{$numbers}个,商品总价为:{$sum}元</p>";
?>
<a href="loginpage.php" rel="external nofollow" >
登录
</a>
<table class="table table-bordered" >
<thead>
<tr>
<th>代号</th>
<th>名称</th>
<th>价格</th>
<th>产地</th>
<th>库存</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<?php
$sql = "select * from fruit";
$arr = $db->query($sql,0);
foreach($arr as $v){
echo "<tr>
<td>{$v[0]}</td>
<td>{$v[1]}</td>
<td>{$v[2]}</td>
<td>{$v[3]}</td>
<td>{$v[4]}</td>
<td><a href='shoppingchuli.php?ids={$v[0]}'>加入购物车</a></td>
</tr>";
}
?>
</tbody>
</table>
<a href="add_list.php" rel="external nofollow" >查看购物车</a>
</body>
</html>
4. Then do the processing page of the homepage: shoppingchuli.php
<?php
session_start();
//取到传过来的主键值，并且添加到购物车的SESSION里面
$ids = $_GET["ids"];
//如果是第一次添加购物车,造一个二维数组存到SESSION里面
//如果不是第一次添加，有两种情况
//1.如果该商品购物车里面不存在，造一个一维数组扔到二维里面
//2.如果该商品在购物车存在，让数量加1
if(empty($_SESSION["gwd"])){
//如果是第一次添加购物车,造一个二维数组存到SESSION里面
$arr = array( array($ids,1));
$_SESSION["gwd"]=$arr;
}else{
$arr=$_SESSION["gwd"];
if(deep_in_array($ids,$arr)){
//如果该商品在购物车存在，让数量加1
foreach($arr as $k=>$v){
if($v[0]==$ids){
$arr[$k][1]++;
}
}
$_SESSION["gwd"]=$arr;
}else{
//如果该商品购物车里面不存在，造一个一维数组扔到二维里面
$arr=$_SESSION["gwd"];
$attr=array($ids,1);
$arr[]=$attr;
$_SESSION["gwd"]=$arr;
}
}
header("location:shopping_list.php");
function deep_in_array($value, $array) {
foreach($array as $item) {
if(!is_array($item)) {
if ($item == $value) {
return true;
} else {
continue;
}
}
if(in_array($value, $item)) {
return true;
} else if(deep_in_array($value, $item)) {
return true;
}
}
return false;
}
The effect is as shown:
5. Then check the shopping cart page and you can see the shopping cart The products, unit price and total price in: gouwuche.php
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="bootstrap/js/jquery-1.11.2.min.js"></script>
<script src="bootstrap/js/bootstrap.min.js"></script>
<link href="bootstrap/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet" type="text/css"/>
</head>
<?php
session_start();
$uid = $_SESSION["uid"];
if(empty($_SESSION["uid"])){
header("location:loginpage.php");
exit;
}
?>
<body>
<h2 >购物车清单</h2>
<table class="table table-bordered" >
<thead>
<tr>
<th>代号</th>
<th>名称</th>
<th>价格</th>
<th>产地</th>
<th>购买数量</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<?php
require_once "./DBDA.class.php";
$db = new DBDA();
if(!empty($_SESSION["gwd"])){
$arr = $_SESSION["gwd"];
$sum = 0;
$numbers = count($arr);
foreach($arr as $k=>$v){
//$v[0];$v[1];
$sql = "select * from fruit where ids='{$v[0]}'";
$a = $db->query($sql,0);
//var_dump($v[1]);
echo "<tr>
<td>{$v[0]}</td>
<td>{$a[0][1]}</td>
<td>{$a[0][2]}</td>
<td>{$a[0][3]}</td>
<td>{$v[1]}</td>
<td><a href='goodsdel.php?zj={$k}'>删除</a></td>
</tr>";
$dj = $a[0][2];
$sum = $sum+$dj*$v[1];
}
}
//echo "<p style='margin-left: 250px;'>购物车中商品总数为{$numbers}个,商品总价为:{$sum}元</p>";
?>
</tbody>
</table>
<a href="submit_order.php?ids={$v[0]}" rel="external nofollow" >提交订单</a>
</body>
</html>
The effect is as shown:
6. Then do the deletion processing page goodsdel.php
<?php
session_start();
$zj = $_GET["zj"];
//如果该水果数量大于1,减1
//如果该水果数量等于1 移除
$arr = $_SESSION["gwd"];
if($arr[$zj][1]>1){
$arr[$zj][1]=$arr[$zj][1]-1;
}else{
unset($arr[$zj]); //清除数组
$arr=array_values($arr); //重新索引数组
}
$_SESSION["gwd"] = $arr;
header("location:add_list.php");
7. Then do the submission page: tijiao.php
##
<?php
session_start();
$ids = $_GET["ids"];
//查看余额
$uid = $_SESSION["uid"];
require_once "./DBDA.class.php";
$db = new DBDA();
$sql = "select account from login where username='{$uid}'";
$arr = $db->query($sql,0);
$aye = $arr[0][0];//余额
//var_dump($aye);
if(!empty($_SESSION["gwd"])){
$arr = $_SESSION["gwd"];
$sum = 0;
//$numbers = count($arr);
foreach($arr as $v){
$sql = "select * from fruit where ids='{$v[0]}'";
$price = $db->query($sql,0);
$dj = $price[0][2];
$sum = $sum+$dj*$v[1];
}
}else{
echo "您还未购买商品!";
//header("shopping_list.php");
exit;
}
//判断余额是否满足购买
if($aye>=$sum){
//判断库存
foreach($arr as $v){
$skc = "select name,numbers from fruit where ids='{$v[0]}'";
$akc = $db->query($sql,0);
var_dump($akc);
$kc = $akc[0][4];//库存
//var_dump($kc);
if($kc<$v[1]){
echo "库存不足!";
exit;
}
}
//提交订单
//账户扣除余额
$skye = "update login set account=account-{$sum} where username='{$uid}'";
$zhye = $db->query($skye);
//扣除库存
foreach($arr as $v){
$skckc = "update fruit set numbers=numbers-{$v[1]} where ids='{$v[0]}'";
$sykc = $db->query($skckc);
}
//添加订单
$ddh = date("Y-m-d H:i:s");
$time = time();
$stjd = "insert into orders values('{$time}','{$uid}','{$ddh}')";
$wcdh = $db->query($stjd);
//添加订单详情
foreach($arr as $v){
$ddxq = "insert into orderdetails values('','{$ddh}','{$v[0]}','{$v[1]}')";
$axq = $db->query($ddxq);
}
}else{
echo "余额不足,请充值!";
exit;
}
header("location:shopping_list.php");
The user account balance has been reduced:
PHP implements shopping website
Detailed explanation of examples of PHP implementing shopping website
php code example of how to implement a multi-functional shopping website
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