Analysis of mall user evaluation star system developed using PHP

Analysis of the mall user evaluation star system developed using PHP

Introduction:
Nowadays, e-commerce has become one of the main ways for people to shop. In a mall, user reviews are feedback and comments given by users to products and services. These reviews have great reference value for other users. In order to better demonstrate the quality and service level of products to users, malls usually provide a star rating system for user evaluations. This article will use PHP language to develop a mall user evaluation star system and conduct a detailed analysis of it.

1. Database design
   First we need to design the evaluation data table and create a table named "comment", which contains the following fields:
2. comment_id INT(11) PRIMARY KEY AUTO_INCREMENT: The evaluation ID, as the primary key, is automatically incremented.
3. user_id INT(11): Evaluation user ID, associated user table.
4. product_id INT(11): Evaluation product ID, associated product table.
5. content TEXT: Evaluation content.
6. star_rating INT(1): Star rating, the value range is 1-5.
7. Evaluation display
   We can use the data table designed above to realize the display function of mall user evaluation. By querying the database, the user's evaluation data is obtained, and classified and displayed according to the star rating. The following is a simple PHP code example:

<?php 
    // 连接数据库
    $conn = mysqli_connect("localhost", "root", "password", "db_name");

    // 查询评价数据
    $query = "SELECT * FROM comment";
    $result = mysqli_query($conn, $query);

    // 遍历评价数据并显示
    while($row = mysqli_fetch_assoc($result)) {
        echo "用户ID: ".$row['user_id']."<br>";
        echo "评价内容: ".$row['content']."<br>";
        echo "星级评价: ".$row['star_rating']."星<br>";
        echo "<hr>";
    }

    // 关闭数据库连接
    mysqli_close($conn);
?>

3. Statistical evaluation data
   Statistics of evaluation stars are very important for the mall and can help the mall analyze the quality of goods and services. The following is an example of PHP code that calculates the average star rating:

<?php
    // 连接数据库
    $conn = mysqli_connect("localhost", "root", "password", "db_name");

    // 查询评价星级数据
    $query = "SELECT AVG(star_rating) AS average_rating FROM comment";
    $result = mysqli_query($conn, $query);
    $row = mysqli_fetch_assoc($result);

    // 显示星级平均分
    echo "星级平均分: ".$row['average_rating']."星";

    // 关闭数据库连接
    mysqli_close($conn);
?>

Conclusion:
Through the above analysis, we can use the PHP language to develop a mall user evaluation star system and query it The database implements evaluation display and statistical functions. This will help the mall provide better goods and services and demonstrate the quality of goods and user satisfaction to users.

Summary:
This article uses PHP language to develop the mall user evaluation star system and conducts a detailed analysis of it. Through the evaluation display and statistical functions, the mall can better understand user feedback and comments, thereby continuously optimizing products and services, and improving user satisfaction and shopping experience.

Note: The above code is only an example. In actual application, it needs to be modified and optimized according to specific project requirements. In addition, in order to ensure data security, appropriate verification and defense measures are required for database connections and queries.

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