Detailed explanation of functional design of shopping mall collection products developed with PHP

Detailed explanation of the design of the mall collection product function developed with PHP

In today's e-commerce era, users usually browse a series of products on the mall website, and the collection function is a common user experience enhancement technology . This article will introduce in detail how to use the collection product function in the PHP Developer City website and provide relevant code examples.

The basic principle of implementing the collection product function is that after logging in to the mall website, users can click the collection button to add products to their personal favorites, and in their personal collections, users can manage their favorites, such as viewing , delete and other operations.

First, we need to create a user table and a collection table. The user table contains the user's basic information, such as ID, username, password, etc.; the collection table records the information of the user's collection of products, such as ID, user ID, product ID, etc. Next, we will introduce how to implement the collection function through PHP and MySQL.

First, we need to add a favorite button on the page after the user logs in. In each product item in the product list, we can use an icon or text link to represent a favorites button. By clicking the button, the product will be added to the user's favorites.

The following is a simple HTML code example:

<!-- 商品列表 -->
<div class="product">
  <h3 id="商品名称">商品名称</h3>
  <p>商品描述</p>
  <a href="add_to_favorites.php?product_id=123">收藏</a>
</div>

In the link of the favorite button, we pass the ID of the product to the add_to_favorites.php file through the GET parameter, for subsequent processing.

Next, we need to write the add_to_favorites.php file to handle the logic of adding products to favorites. First, we need to check if the user is logged in to ensure that only logged in users can add items to favorites. At the same time, we also need to obtain the product ID.

The following is a simple PHP code example:

session_start();

// 检查用户是否登录
if (!isset($_SESSION['user_id'])) {
  echo '请先登录';
  exit;
}

// 获取商品ID
$product_id = $_GET['product_id'];

// 将商品ID插入收藏表中
$user_id = $_SESSION['user_id'];
$insert_sql = "INSERT INTO favorites (user_id, product_id) VALUES ($user_id, $product_id)";
// 执行插入操作

In the above code, we first enable session management through the session_start() function so that we can Share user login status between pages. Then, we check whether the user_id variable exists in the $_SESSION array to determine whether the user is logged in. If not logged in, we will prompt the user to log in first.

Next, we get the ID of the product to be added to the favorites by getting the product_id parameter in the $_GET array.

Finally, we use SQL statements to insert the user ID and product ID into the collection table to complete the collection operation.

Finally, we also need to implement the favorites page so that users can view and manage their favorite products. In the personal favorites page, we need to query all the products collected by the user from the collection table and display the results.

The following is a simple PHP code example:

session_start();

if (!isset($_SESSION['user_id'])) {
  echo '请先登录';
  exit;
}

$user_id = $_SESSION['user_id'];

// 查询用户收藏的商品
$select_sql = "SELECT * FROM favorites WHERE user_id = $user_id";
// 执行查询操作，并将结果展示在页面上

In the above code, we first check whether the user is logged in, and then get the user ID through the $_SESSION array.

Next, we use SQL statements to query all product information collected by the user from the collection table.

Finally, we display the query results on the personal favorites page for users to view and manage.

Through the above steps, we have completed the design and implementation of the mall collection product function developed with PHP. By adding a favorite button to the product list and processing addition, deletion and other operations in the relevant PHP files, we can enable users to collect favorite products and manage them on the personal favorites page. In this way, users can browse and purchase the products they are interested in more conveniently, which improves the user experience.

Of course, the above examples are just simple code examples. In actual development, more details and security issues need to be considered, such as preventing duplicate collections, permission control, etc. But I hope that through the introduction of this article, you can understand and master the basic methods and ideas of using PHP to develop the store's product collection function.

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