Second-hand recycling website developed in PHP provides product subscription recommendation function-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

Second-hand recycling website developed in PHP provides product subscription recommendation function

王林

Jul 01, 2023 pm 05:24 PM

Provide second-hand product recyclingBuying and selling functionsRecommend relevant products to users.

The second-hand recycling website developed in PHP provides product subscription recommendation function

With the development of society, second-hand recycling has become a sustainable business model. In order to make it easier for users to browse and find the products they need, many second-hand recycling websites have begun to introduce subscription recommendation functions. In this article, we will explore how to use PHP to develop a second-hand recycling website with product subscription recommendation function.

First, we need to create a database to store user information and product information. The following is an example of SQL code to create a user table (user) and an item table (item):

CREATE TABLE user (
  id INT(11) PRIMARY KEY AUTO_INCREMENT,
  email VARCHAR(255) NOT NULL,
  password VARCHAR(255) NOT NULL
);

CREATE TABLE item (
  id INT(11) PRIMARY KEY AUTO_INCREMENT,
  name VARCHAR(255) NOT NULL,
  description TEXT,
  price DECIMAL(10,2),
  category VARCHAR(255),
  user_id INT(11),
  FOREIGN KEY (user_id) REFERENCES user(id)
);

Next, we need to create a subscription table (subscription), which will track the user's subscription information. Here is a sample SQL code to create a subscription table:

CREATE TABLE subscription (
  id INT(11) PRIMARY KEY AUTO_INCREMENT,
  user_id INT(11),
  category VARCHAR(255),
  FOREIGN KEY (user_id) REFERENCES user(id)
);

Now, we can start building the front-end and back-end functionality of the website. First, let's create a registration page (register.php) where users can register a new account. Here is a code example for register.php:

<?php
// 数据库连接和操作代码

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
  $email = $_POST['email'];
  $password = $_POST['password'];

  // 检查是否存在相同的email地址
  $query = "SELECT * FROM user WHERE email = '$email'";
  $result = mysqli_query($conn, $query);

  if (mysqli_num_rows($result) > 0) {
    echo "该邮箱已经被注册.";
  } else {
    // 将用户信息插入到数据库中
    $query = "INSERT INTO user (email, password) VALUES ('$email', '$password')";
    mysqli_query($conn, $query);
    echo "注册成功.";
  }
}
?>

<!DOCTYPE html>
<html>
<head>
  <title>注册</title>
</head>
<body>
  <h2 id="注册">注册</h2>
  <form method="POST" action="">
    <input type="email" name="email" placeholder="邮箱" required><br>
    <input type="password" name="password" placeholder="密码" required><br>
    <input type="submit" value="注册">
  </form>
</body>
</html>

After successful registration, users will be able to log in to their account and subscribe to specific product categories.

The following is a code example for the website's login page (login.php):

<?php
// 数据库连接和操作代码

session_start();

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
  $email = $_POST['email'];
  $password = $_POST['password'];

  // 查找与提供的邮件和密码匹配的用户
  $query = "SELECT * FROM user WHERE email = '$email' AND password = '$password'";
  $result = mysqli_query($conn, $query);

  if (mysqli_num_rows($result) > 0) {
    // 将用户信息存储在session中

    $_SESSION['email'] = $email;
    header('Location: dashboard.php');
  } else {
    echo "无效的电子邮件或密码.";
  }
}
?>

<!DOCTYPE html>
<html>
<head>
  <title>登录</title>
</head>
<body>
  <h2 id="登录">登录</h2>
  <form method="POST" action="">
    <input type="email" name="email" placeholder="邮箱" required><br>
    <input type="password" name="password" placeholder="密码" required><br>
    <input type="submit" value="登录">
  </form>
</body>
</html>

After a successful login, the user will be redirected to their dashboard page (dashboard.php). On the dashboard page, users can choose to subscribe to specific product categories.

The following is a code example of dashboard.php:

<?php
// 数据库连接和操作代码

session_start();

if (!isset($_SESSION['email'])) {
  header('Location: login.php');
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
  $category = $_POST['category'];

  // 将用户的订阅信息插入到订阅表中
  $email = $_SESSION['email'];
  $query = "SELECT * FROM user WHERE email = '$email'";
  $result = mysqli_query($conn, $query);
  $user = mysqli_fetch_assoc($result);
  $user_id = $user['id'];

  $query = "INSERT INTO subscription (user_id, category) VALUES ('$user_id', '$category')";
  mysqli_query($conn, $query);

  echo "成功订阅该类别.";
}
?>

<!DOCTYPE html>
<html>
<head>
  <title>仪表盘</title>
</head>
<body>
  <h2 id="仪表盘">仪表盘</h2>
  <form method="POST" action="">
    <input type="checkbox" name="category" value="电子产品"> 电子产品<br>
    <input type="checkbox" name="category" value="家具"> 家具<br>
    <input type="checkbox" name="category" value="服装"> 服装<br>
    <input type="submit" value="订阅">
  </form>
</body>
</html>

When users successfully subscribe to a product category, they will receive the latest notifications about products in that category.

Through the above sample code, we successfully developed a second-hand recycling website using PHP and added a product subscription recommendation function. Users can register and log in to their accounts and choose to subscribe to specific categories of products. This feature not only facilitates users' subscription needs, but also improves user experience and website usability. I hope this article can help everyone understand and develop websites with similar functions.

The above is the detailed content of Second-hand recycling website developed in PHP provides product subscription recommendation function. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

How do you set the session cookie parameters in PHP?Apr 22, 2025 pm 05:33 PM

Setting session cookie parameters in PHP can be achieved through the session_set_cookie_params() function. 1) Use this function to set parameters, such as expiration time, path, domain name, security flag, etc.; 2) Call session_start() to make the parameters take effect; 3) Dynamically adjust parameters according to needs, such as user login status; 4) Pay attention to setting secure and httponly flags to improve security.

What is the main purpose of using sessions in PHP?Apr 22, 2025 pm 05:25 PM

The main purpose of using sessions in PHP is to maintain the status of the user between different pages. 1) The session is started through the session_start() function, creating a unique session ID and storing it in the user cookie. 2) Session data is saved on the server, allowing data to be passed between different requests, such as login status and shopping cart content.

How can you share sessions across subdomains?Apr 22, 2025 pm 05:21 PM

How to share a session between subdomains? Implemented by setting session cookies for common domain names. 1. Set the domain of the session cookie to .example.com on the server side. 2. Choose the appropriate session storage method, such as memory, database or distributed cache. 3. Pass the session ID through cookies, and the server retrieves and updates the session data based on the ID.

How does using HTTPS affect session security?Apr 22, 2025 pm 05:13 PM

HTTPS significantly improves the security of sessions by encrypting data transmission, preventing man-in-the-middle attacks and providing authentication. 1) Encrypted data transmission: HTTPS uses SSL/TLS protocol to encrypt data to ensure that the data is not stolen or tampered during transmission. 2) Prevent man-in-the-middle attacks: Through the SSL/TLS handshake process, the client verifies the server certificate to ensure the connection legitimacy. 3) Provide authentication: HTTPS ensures that the connection is a legitimate server and protects data integrity and confidentiality.

The Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

See all articles

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Assassin's Creed Shadows: Seashell Riddle Solution

3 weeks agoByDDD

What's New in Windows 11 KB5054979 & How to Fix Update Issues

2 weeks agoByDDD

Assassin's Creed Shadows - How To Find The Blacksmith And Unlock Weapon And Armour Customisation

1 months agoByDDD

Where to find the Crane Control Keycard in Atomfall

3 weeks agoByDDD

Roblox: Dead Rails - How To Complete Every Challenge

3 weeks agoByDDD

Hot Tools

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software