Design analysis of shopping mall full discount and discount activities developed by PHP

Analysis on design of full discounts and discount activities in malls developed by PHP

In recent years, with the rapid development of the Internet and the rise of the e-commerce industry, more and more companies have chosen to open their own malls online. to attract more consumers and expand market share. In the operation process of the mall, a common promotion strategy is full discounts and discount activities. This article will start from a technical point of view, discuss the design analysis of shopping mall discounts and discount activities developed based on PHP, and attach code examples.

In the mall developed by PHP, the design of full discounts and discount activities mainly involves the following aspects:

1. Product data structure design

Mall Product information is the basis of promotional activities. In the database, we can design a products table to store product-related information, including product ID, product name, product price, inventory, etc. For example, the following is a simple product table design example:

CREATE TABLE `products` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `name` VARCHAR(100) NOT NULL,
  `price` DECIMAL(10,2) NOT NULL,
  `stock` INT(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

2. Design of full discount activities

Full discount activities are one of the common promotion methods. When designing full discount activities, we can use a discounts table to store full discount rules. For example, the following is a design example of a simple discounts table:

CREATE TABLE `discounts` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `min_total` DECIMAL(10,2) NOT NULL,
  `discount` DECIMAL(10,2) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

In the above design, the min_total field indicates the amount of money that can be used to enjoy full discounts, and the discount field indicates the amount of full discounts. For example, when min_total is 100 and discount is 10, it means that if the total amount of goods in the shopping cart exceeds 100, 10 yuan can be deducted.

3. Design of discount activities

In addition to full discount activities, discount activities are often held in shopping malls. When designing discount activities, we can extend the products table and add a discount field to store product discount information. For example, the following is an extension to the products table:

ALTER TABLE `products`
ADD COLUMN `discount` DECIMAL(10,2) NOT NULL DEFAULT 0 AFTER `price`;

In the above design, the discount field represents the discount information of the product. For example, when the discount is 0.8, it means that the product has a 20% discount.

4. Activity Application and Restrictions

In actual application, full discount and discount activities may be subject to some restrictions. For example, the time limit of the activity, the user limit of participating in the activity, the product limit of participating in the activity, etc. To this end, we can add corresponding fields to store these restriction information when designing the corresponding data table.

CREATE TABLE `activities` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `name` VARCHAR(100) NOT NULL,
  `start_time` DATETIME NOT NULL,
  `end_time` DATETIME NOT NULL,
  `user_limit` INT(11) NOT NULL DEFAULT 0,
  `product_limit` VARCHAR(255) NOT NULL DEFAULT '',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

In the above design, the start_time field represents the start time of the activity, the end_time field represents the end time of the activity, the user_limit field represents the user limit for participating in the activity, and the product_limit field represents the product limit for participating in the activity, which can store products. ID or other identifier.

In summary, the design analysis of the mall's full discount and discount activities developed based on PHP mainly involves the design of product data structure, the design of full discount activities, the design of discount activities, and the application and restrictions of activities. Through reasonable database design and code development, we can realize the flexible application and management of various promotional activities in the mall.

The above is the content analysis of this article, and the following is a complete code example:

<?php
// 根据商品ID获取商品信息
function getProductInfo($productId) {
    // 连接数据库，查询products表
    $conn = new mysqli("localhost", "username", "password", "database_name");
    $sql = "SELECT * FROM products WHERE id = $productId";
    $result = $conn->query($sql);
    
    // 返回商品信息
    if($result->num_rows > 0) {
        return $result->fetch_assoc();
    }else {
        return false;
    }
}

// 根据满减规则计算优惠金额
function calculateDiscount($total, $discounts) {
    $discount = 0;
    
    // 根据满减规则计算优惠金额
    foreach($discounts as $d) {
        if($total >= $d['min_total']) {
            $discount = $d['discount'];
        }
    }
    
    return $discount;
}

// 根据折扣信息计算折扣价格
function calculatePrice($price, $discount) {
    return $price * $discount;
}

// 购物车结算
function checkout($productId, $quantity) {
    // 获取商品信息
    $product = getProductInfo($productId);
    
    if($product) {
        // 计算总金额
        $total = $product['price'] * $quantity;
        
        // 查询满减规则
        $conn = new mysqli("localhost", "username", "password", "database_name");
        $sql = "SELECT * FROM discounts ORDER BY min_total DESC";
        $result = $conn->query($sql);
        
        $discounts = array();
        if($result->num_rows > 0) {
            while($row = $result->fetch_assoc()) {
                $discounts[] = $row;
            }
        }
        
        // 计算优惠金额
        $discount = calculateDiscount($total, $discounts);
        
        // 根据折扣信息计算折扣价格
        $price = calculatePrice($product['price'], $product['discount']);
        
        // 最终支付金额
        $payment = $total - $discount - $price;
        
        return $payment;
    }else {
        return false;
    }
}

// 使用示例
$productId = 1;
$quantity = 2;
$payment = checkout($productId, $quantity);

if($payment) {
    echo "结算成功，应付金额：".$payment."元";
}else {
    echo "商品不存在";
}
?>

The above is a simple design and code example of a mall full discount and discount event. Through this design, we can easily implement the logic of various promotional activities in the mall and provide flexible configuration options to meet different business needs. Of course, in practical applications, more functions and optimizations may be needed, but this article provides a basic idea and starting point.

I hope the content of this article will be helpful to everyone in the design of full discounts and discount activities in the mall developed by PHP. I hope everyone can achieve better results in e-commerce operations!

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