Second-hand recycling website developed in PHP provides shopping cart product comparison function-PHP Tutorial-php.cn

Second-hand recycling website developed in PHP provides shopping cart product comparison function

王林

Release： 2023-07-01 22:32:01

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The second-hand recycling website developed by PHP provides a shopping cart product comparison function

In today's consumer era, people's growing demand for shopping has led to more and more second-hand products on the market. Second-hand recycling websites emerged at the historic moment, which not only brought convenience to people, but also made important contributions to the development of environmental protection. In this context, how to provide a convenient and fast shopping experience has become an urgent problem that second-hand recycling website developers need to solve. This article will introduce how to use PHP to develop a second-hand recycling website and implement the shopping cart product comparison function.

1. Building a basic environment
In order to develop a complete second-hand recycling website, we first need to build a local development environment. We can choose to use an integrated development environment (IDE) such as XAMPP or use a separate web server and database environment. Here we use XAMPP as an example.

2. Create a database
After setting up the development environment, we need to create a database to store product information. We can use MySQL or other relational databases to accomplish this task. First, we create a database named "secondhand", and then create a "products" table to store product information.

Code example:

CREATE DATABASE secondhand;

USE secondhand;

CREATE TABLE `products` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `price` decimal(10,2) NOT NULL,
  `description` text,
  PRIMARY KEY (`id`)
);

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3. Create website pages
Next, we need to create the main pages of the website, including the homepage, product list page and shopping cart page. The following is a simple homepage example:

<!DOCTYPE html>
<html>
<head>
    <title>二手回收网站</title>
</head>
<body>
    <h1>欢迎来到二手回收网站</h1>
    <a href="products.php">点击进入商品列表</a>
</body>
</html>

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4. Implement the product list and shopping cart functions
After creating the page, we need to implement the product list and shopping cart functions in the PHP code.

First, we create a file named "products.php" to display the product list. In this file, we connect to the database and get information about all products from the "products" table, and then display it on the web page.

Code example:

<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "secondhand";

$connection = new mysqli($servername, $username, $password, $dbname);

if ($connection->connect_error) {
    die("连接失败: " . $connection->connect_error);
}

$sql = "SELECT * FROM products";
$result = $connection->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "商品名：" . $row["name"]. " - 价格: " . $row["price"]. "<br>";
    }
} else {
    echo "0 结果";
}
$connection->close();
?>

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Next, we create a file named "cart.php" to implement the shopping cart function. We will use PHP Session to store shopping cart information.

Code example:

<?php
session_start();

// 添加商品到购物车
if(isset($_POST['add_to_cart'])){
    $product_id = $_POST['product_id'];
    $_SESSION['cart'][$product_id] = 1;
    echo "商品已添加到购物车";
}

// 从购物车中移除商品
if(isset($_POST['remove_from_cart'])){
    $product_id = $_POST['product_id'];
    unset($_SESSION['cart'][$product_id]);
    echo "商品已从购物车移除";
}

// 显示购物车商品
echo "购物车中的商品：<br>";
foreach($_SESSION['cart'] as $product_id => $quantity){
    echo "商品ID：" . $product_id . " - 数量：" . $quantity . "<br>";
}
?>

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5. Improve website functions
In addition to product list and shopping cart functions, a complete second-hand recycling website also needs to include user registration, login, and personal information Management and other functions. These functions can be developed independently according to specific needs.

6. Summary
Through the above steps, we have implemented a second-hand recycling website developed based on PHP, and added a shopping cart product comparison function to it. The shopping cart function stores shopping cart information through PHP sessions, enabling cross-page data sharing and saving. I hope this article will help you understand how to use PHP to develop a second-hand recycling website.

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