Second-hand recycling website uses merchant credit rating function developed in PHP

The second-hand recycling website uses the merchant credit rating function developed by PHP

With the development of social economy, the second-hand commodity recycling industry is gradually emerging. However, due to the particularity of the industry, there are some unscrupulous merchants, which brings certain risks to consumers. In order to protect the rights and interests of consumers, many second-hand recycling websites have introduced merchant credit rating functions. This article will take a second-hand recycling website developed in PHP as an example to introduce the implementation principle and code examples of the merchant credit rating function.

The merchant credit rating function is a function that evaluates merchant behavior and displays its credit status in the form of ratings. A common way to implement this function is to evaluate the credit level of the merchant through user reviews and complaints, thereby providing a reference for consumers. The following is a simple implementation example of the merchant credit rating function:

First, we need to create a MySQL database table for storing merchant information, including fields such as merchant ID, merchant name, and credit rating. For example, we create a table named "merchants" with the following fields:

CREATE TABLE merchants (
   id INT AUTO_INCREMENT PRIMARY KEY,
   name VARCHAR(100),
   rating INT
);

Next, we need to display the merchant's credit rating on the merchant details page of the website. Assuming that the URL of our merchant details page is "merchant.php", we can obtain and display the merchant's credit rating through the following PHP code:

<?php
// 获取商家ID
$merchantID = $_GET['id'];

// 连接数据库
$mysqli = new mysqli("localhost", "username", "password", "database_name");
if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: " . $mysqli->connect_error;
    exit();
}

// 查询商家信用评级
$query = "SELECT rating FROM merchants WHERE id = $merchantID";
$result = $mysqli->query($query);

// 展示商家信用评级
if ($result) {
    $row = $result->fetch_assoc();
    echo "商家信用评级：" . $row['rating'];
} else {
    echo "无法获取商家信用评级";
}

// 关闭数据库连接
$mysqli->close();
?>

The above code first obtains the merchant through $_GET['id'] ID, then connect to the MySQL database and query the merchant's credit rating based on the merchant ID. Finally, the merchant credit rating is displayed in text form on the merchant details page.

In addition to displaying merchant credit ratings, we can also update merchants' credit ratings when users submit reviews and complaints. Assuming that our rating and complaint system uses POST requests to send rating and complaint information to "rating.php", we can use the following PHP code to update the merchant's credit rating:

<?php
// 获取商家ID和评级分数
$merchantID = $_POST['merchantID'];
$ratingScore = $_POST['ratingScore'];

// 更新商家信用评级
$mysqli = new mysqli("localhost", "username", "password", "database_name");
if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: " . $mysqli->connect_error;
    exit();
}

$query = "UPDATE merchants SET rating = $ratingScore WHERE id = $merchantID";
$result = $mysqli->query($query);

if ($result) {
    echo "商家信用评级更新成功";
} else {
    echo "商家信用评级更新失败";
}

$mysqli->close();
?>

The above code is first obtained through $_POST Merchant ID and rating score, then connect to the MySQL database and update the merchant's credit rating based on the merchant ID. Finally, the updated results are returned.

Through the above code example, we can implement the merchant credit rating function of the second-hand recycling website, providing a reference standard for consumers and increasing the credibility of the website. Of course, in actual situations, the implementation of merchant credit rating functions can be more complex and complete, such as introducing more evaluation indicators and algorithms.

The above is the detailed content of Second-hand recycling website uses merchant credit rating function developed in PHP. For more information, please follow other related articles on the PHP Chinese website!