Analysis of shopping mall purchase limit and discount setting strategies developed with PHP

Analysis of mall purchase limit and discount setting strategies developed with PHP

In the operation process of a mall, in order to attract users and increase sales, different promotion strategies are widely used. One of them is purchase limit and discount settings. This strategy can encourage users to increase their purchase quantity by setting a purchase limit and giving discounts or other benefits when a certain purchase amount is reached.

How to use PHP to develop a shopping mall purchase limit and discount setting strategy? Let's analyze it step by step.

1. Database design

First, we need to design a database to store product information in the mall, product information in the shopping cart, and data related to purchase limits and discount settings.

We can create the following tables:

• Product table (product): stores basic information of products, such as product ID, name, price, etc.

CREATE TABLE product (
  id INT PRIMARY KEY,
  name VARCHAR(255),
  price DECIMAL(10, 2)
);

• Shopping cart table (cart): stores product information in the shopping cart, such as shopping cart ID, user ID, product ID, quantity, etc.

CREATE TABLE cart (
  id INT PRIMARY KEY,
  user_id INT,
  product_id INT,
  quantity INT,
  FOREIGN KEY(user_id) REFERENCES user(id),
  FOREIGN KEY(product_id) REFERENCES product(id)
);

• User table (user): stores user information, such as user ID, user name, etc.

CREATE TABLE user (
  id INT PRIMARY KEY,
  username VARCHAR(255)
);

• Purchase limit and discount setting table (purchase_limit): stores discount or preferential information corresponding to different purchase limits, such as purchase limits and discounts.

CREATE TABLE purchase_limit (
  id INT PRIMARY KEY,
  limit_amount DECIMAL(10, 2),
  discount DECIMAL(10, 2)
);

2. PHP code implementation

Next, we can use PHP to write code to implement purchase limit and discount setting strategies.

First, we can create a function to obtain purchase limit and discount setting information.

function getPurchaseLimits() {
  $purchaseLimits = array();

  // 连接数据库
  $conn = mysqli_connect("localhost", "username", "password", "database");

  // 查询购买限额与折扣设置信息
  $query = "SELECT * FROM purchase_limit";
  $result = mysqli_query($conn, $query);

  // 将查询结果存入数组
  while ($row = mysqli_fetch_assoc($result)) {
    $purchaseLimits[] = $row;
  }

  // 关闭数据库连接
  mysqli_close($conn);

  // 返回购买限额与折扣设置信息
  return $purchaseLimits;
}

Then, we can create a function to calculate the total amount of items in the shopping cart and calculate the discount amount based on the purchase limit and discount setting information.

function calculateTotalAmount($user_id) {
  // 连接数据库
  $conn = mysqli_connect("localhost", "username", "password", "database");

  // 查询购物车中的商品信息
  $query = "SELECT SUM(product.price * cart.quantity) AS total_amount
            FROM cart
            INNER JOIN product ON cart.product_id = product.id
            WHERE cart.user_id = " . $user_id;
  $result = mysqli_query($conn, $query);
  $row = mysqli_fetch_assoc($result);
  $totalAmount = $row['total_amount'];

  // 查询购买限额与折扣设置信息
  $purchaseLimits = getPurchaseLimits();

  // 遍历购买限额与折扣设置信息，计算折扣金额
  foreach ($purchaseLimits as $purchaseLimit) {
    if ($totalAmount >= $purchaseLimit['limit_amount']) {
      $discount = $purchaseLimit['discount'];
      break;
    }
  }

  // 计算折扣金额
  $discountAmount = $totalAmount * $discount;

  // 关闭数据库连接
  mysqli_close($conn);

  // 返回折扣金额
  return $discountAmount;
}

Finally, we can call the above function on the shopping cart page of the mall to display the total amount and discount amount of the products in the shopping cart.

// 连接数据库
$conn = mysqli_connect("localhost", "username", "password", "database");

// 查询当前用户的购物车信息
$query = "SELECT * FROM cart WHERE user_id = " . $user_id;
$result = mysqli_query($conn, $query);

// 显示购买限额与折扣设置策略
$purchaseLimits = getPurchaseLimits();
foreach ($purchaseLimits as $purchaseLimit) {
  echo "满" . $purchaseLimit['limit_amount'] . "元，折扣" . ($purchaseLimit['discount'] * 100) . "%<br>";
}

// 显示购物车中的商品总金额和折扣金额
$totalAmount = calculateTotalAmount($user_id);
$discountAmount = $totalAmount - $discountAmount;
echo "商品总金额：¥" . $totalAmount . "<br>";
echo "折扣金额：¥" . $discountAmount . "<br>";

// 关闭数据库连接
mysqli_close($conn);

Through the above code example, we can implement a mall purchase limit and discount setting strategy developed using PHP. When the user adds items to the shopping cart, the mall will calculate the total amount of the items in the shopping cart and the corresponding discount amount based on the purchase limit and discount setting information. In this way, users can be attracted to increase their purchase quantity to reach different purchase limits and enjoy different discounts, thereby increasing the mall's sales.

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