How to implement PHP mall product details page

How to use PHP Developer City to implement product details page

With the rapid development of the Internet, e-commerce has become one of the main ways for people to shop. In order to meet users' needs for product information, the product details page of the mall has become particularly important. This article will introduce how to use PHP Developer City to implement product details page.

1. Preparation work
Before starting development, we need to set up a PHP development environment. First, you need to install a web server software such as Apache or Nginx. Then, download and install PHP, and configure the relevant environment variables. Finally, you need to install and configure the database. Commonly used ones are MySQL and MariaDB.

2. Create database and data table
Before developing the city, we need to design the database structure and create the corresponding data table. The data table can contain various attributes of the product, such as product name, price, inventory, description, etc. At the same time, you can also add some additional fields according to needs, such as product classification, brand, etc.

3. Write the PHP code for the product details page

1. Connect to the database

In the PHP code for the product details page, we first need to connect to the database, And select the corresponding data table for subsequent operations.

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

// 创建数据库连接
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

2. Query product information

In the product details page, based on the incoming product ID, we need to query the corresponding product information from the database and display it on on the page. You can use SQL statements to query the database, as shown below:

$productId = $_GET['id'];
$sql = "SELECT * FROM products WHERE id = $productId";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
    $row = $result->fetch_assoc();
    // 展示商品信息
    echo "商品名称：" . $row["name"];
    echo "价格：" . $row["price"];
    echo "库存：" . $row["stock"];
    echo "描述：" . $row["description"];
} else {
    echo "商品不存在";
}

3. Close the database connection

After completing the relevant operations, we need to close the database connection in time to release resources.

$conn->close();

4. Page Beautification and Function Enhancement
In addition to the above basic functions, in order to improve the user experience and reduce the page loading time, we can also perform some beautification and functional enhancement on the product details page.

1. Picture display

You can display pictures of the product on the product details page so that users can more intuitively understand the appearance and characteristics of the product. You can use the img tag of HTML to introduce images, as shown below:

<img src="<?php echo $row["image"]; ?>" alt="商品图片">

2. Add to shopping cart

In order to facilitate users’ shopping operations, you can add it to the product details page Shopping cart functionality. This can be achieved using HTML forms and buttons, as shown below:

<form action="add_to_cart.php" method="post">
    <input type="hidden" name="product_id" value="<?php echo $productId; ?>">
    <input type="number" name="quantity" value="1" min="1">
    <input type="submit" value="加入购物车">
</form>

3. Related product recommendations

In order to guide users to explore more products, you can use the product details page to Display some related product recommendations. You can query the database to obtain similar products based on their categories or tags, and display them on the page.

Summary:
This article introduces how to use PHP Developer City to implement product details page. By connecting to the database, querying product information, and displaying it on the page, you can provide users with more detailed product information. At the same time, by adding functions such as adding to the shopping cart and recommending related products, the user experience can be improved and sales can be promoted. I hope this article will be helpful to your PHP development work.

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