Use PHP and Vue to implement discounts for member points after payment

Using PHP and Vue to implement discounts and discounts for member points after payment

With the rapid development of e-commerce, more and more companies are beginning to pay attention to and utilize members Points to attract and retain customers. Offering discounts to members after payment is one common method. This article will introduce how to use PHP and Vue to implement discounts for member points after payment, and provide specific code examples.

1. Requirements Analysis
Before starting to write code, we first need to clarify the requirements. We will implement a simple e-commerce website where users can purchase goods through payment. After successful payment, members will enjoy corresponding discounts based on their points level.

The specific requirements are as follows:

1. Users will receive a certain number of points after registering as a member.
2. When users purchase goods, they can choose to use a certain number of points for discounts.
3. The discount ratio is determined based on the user's points level. The higher the points level, the greater the discount.
4. After successful payment, the member’s points will be reduced accordingly.

2. Technical Implementation
In order to achieve the above requirements, we can use PHP as the back-end language to process business logic, and use Vue as the front-end framework for data interaction and display. The following are the steps to implement:

1. Create database
   First we need to create a database containing two tables: user table and product table.

User table fields include: User ID (UserID), Username (Username), Password (Password), Points (Points), etc.

The product table fields include: product ID (ProductID), product name (ProductName), product price (Price), etc.

2. PHP backend
   (1) User registration
   When a user registers, we need to initialize a certain number of points for the user.

<?php
// 用户注册
function register($username, $password) {
    // 验证用户名和密码
    // ...

    // 初始化用户积分
    $points = 100; // 初始积分为100
    // 插入用户表
    $query = "INSERT INTO user (Username, Password, Points) VALUES ('$username', '$password', $points)";
    // 执行插入操作
    // ...
}
?>

(2) Obtain user points level
According to user points, we can determine the user's points level and then determine the discount ratio.

<?php
// 获取用户积分等级
function getPointsLevel($points) {
    // 根据积分等级规则，计算积分等级
    if ($points >= 0 && $points < 100) {
        return 1; // 积分等级1
    } else if ($points >= 100 && $points < 200) {
        return 2; // 积分等级2
    } else if ($points >= 200 && $points < 300) {
        return 3; // 积分等级3
    } else {
        return 4; // 积分等级4
    }
}
?>

(3) Processing payment
After the user pays successfully, we need to calculate the discount amount based on the number of points selected by the user and the product price, and update the user's points.

<?php
// 处理支付
function handlePayment($userId, $productId, $pointsUsed) {
    // 查询用户积分
    $query = "SELECT Points FROM user WHERE UserID = $userId";
    // 执行查询操作
    // ...
    // 获取用户积分
    $points = 100; // 假设用户积分为100

    // 查询商品价格
    $query = "SELECT Price FROM product WHERE ProductID = $productId";
    // 执行查询操作
    // ...
    // 获取商品价格
    $price = 100; // 假设商品价格为100

    // 计算折扣金额
    $discount = $pointsUsed * 0.1; // 假设折扣比例为0.1

    // 更新用户积分
    $newPoints = $points - $pointsUsed;
    $query = "UPDATE user SET Points = $newPoints WHERE UserID = $userId";
    // 执行更新操作
    // ...

    // 返回折扣金额
    return $discount;
}
?>

3. Vue front-end
   (1) User registration
   On the user registration page, the user needs to fill in the user name and password, and submit the form by clicking the registration button.

<template>
    <div>
        <input v-model="username" placeholder="Username">
        <input v-model="password" placeholder="Password">
        <button @click="register">Register</button>
    </div>
</template>

<script>
export default {
    data() {
        return {
            username: '',
            password: ''
        };
    },
    methods: {
        register() {
            // 调用后端注册接口
            // ...
        }
    }
}
</script>

(2) Payment page
On the payment page, the user needs to select the number of points to use and submit the form by clicking the payment button.

<template>
    <div>
        <select v-model="pointsUsed">
            <option v-for="point in points" :value="point">{{ point }}</option>
        </select>
        <button @click="handlePayment">Pay</button>
    </div>
</template>

<script>
export default {
    data() {
        return {
            points: [0, 50, 100, 150, 200], // 假设可用积分
            pointsUsed: 0 // 默认使用积分0
        };
    },
    methods: {
        handlePayment() {
            // 调用后端支付接口
            // ...
        }
    }
}
</script>

The above is a simple example of using PHP and Vue to implement discounts for member points after payment. In actual projects, we need to make appropriate modifications and expansions according to specific needs. Hope this article is helpful to you!

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