How to use PHP Developer City to implement product listing and delisting functions

How to use PHP Developer City to realize the function of putting products on and off the shelves

With the rapid development of the Internet, e-commerce has gradually become the mainstream way for people to shop. In e-commerce, the mall is a very important component. In order for the mall to operate better, the functions of putting products on and off the shelves are essential. This article will give a detailed introduction on how to use the PHP Developer City to implement the function of putting products on and off the shelves.

1. Mall database design
   Before developing the product listing and removal functions, you first need to design the mall database. Common product database tables include product tables, classification tables, brand tables and product association tables. Among them, the product table records the basic information of the product, the classification table is used to classify products, the brand table records the brand information of the product, and the product association table is used to establish the relationship between the product, category, and brand.
2. Development of product listing function
   The key to realizing the product listing function is to update the status of the product. Add a field to the product table to record the status of the product, for example, use a field named "status", 1 means on the shelf, 0 means off the shelf. When the user needs to put the product on the shelf, he can do so by modifying the value of this field to 1. In the PHP code, the product listing function can be implemented by updating the database, for example, using the following code:

<?php
// 获取商品ID
$productId = $_GET['productId'];

// 更新商品状态为1
$sql = "UPDATE product SET status = 1 WHERE productId = $productId";
$result = mysqli_query($conn, $sql);

// 判断更新是否成功
if ($result) {
    echo "商品上架成功";
} else {
    echo "商品上架失败";
}
?>

3. Product removal function development
   is similar to the product listing function, the product The implementation of the removal function also requires updating the status field of the product. In the PHP code, you can modify the value of this field to 0 to implement the product removal function. For example, use the following code:

<?php
// 获取商品ID
$productId = $_GET['productId'];

// 更新商品状态为0
$sql = "UPDATE product SET status = 0 WHERE productId = $productId";
$result = mysqli_query($conn, $sql);

// 判断更新是否成功
if ($result) {
    echo "商品下架成功";
} else {
    echo "商品下架失败";
}
?>

4. Mall front desk display
   to implement product removal from the shelves After the function is completed, the mall front desk needs to display the status of the product. You can add a mark indicating the status of the product to the product information on the product list page or product details page. For example, use a color label to indicate the status of the product. Green means it has been put on the shelf, and red means it has been taken off the shelf. In the PHP code, you can determine what label to display by judging the value of the product status field. For example, use the following code:

<?php
// 获取商品状态
$status = $row['status'];

// 根据商品状态判断展示什么标签
if ($status == 1) {
    echo "<span style='color: green;'>上架</span>";
} else {
    echo "<span style='color: red;'>下架</span>";
}
?>

Through the above steps, you can use the PHP Developer City to implement the function of putting products on and off the shelves. . Of course, other details need to be taken into consideration in actual development, such as permission management, product inventory, etc. But the above steps can provide developers with a basic guide. I hope this article can provide some help to developers when implementing the function of putting products on and off the shelves.

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