Second-hand recycling website uses online return application function developed in PHP

The second-hand recycling website uses the online return application function developed by PHP

With the rapid development of the Internet and e-commerce, second-hand recycling has become an increasingly popular economic model. At the same time, the management of second-hand product returns has become increasingly important. In order to improve user satisfaction with second-hand recycling websites, many websites have begun to develop online return application functions to provide more convenient and efficient return services.

This article will take a second-hand recycling website as an example to introduce how to use PHP to develop an online return application function. We will explain in detail from three aspects: database design, back-end logic and front-end display.

1. Database design

First, we need to create a database to store return-related data. Create a data table named "returns", including the following fields:

• id: the unique identifier of the return record, set as the primary key
• order_id: order number, used for association Returns and original orders
• reason: the reason for the return by the user, used to record the return reason selected by the user
• description: the return description supplemented by the user
• status: the return status, for example "Pending review", "Approved", "Refunded", etc.
• created_at: the creation time of the return record, used for sorting and querying

2. Back-end logic

In the backend, we need to write PHP code to handle the logic of return application. First, save the user's return request to the database. The following is a sample code:

<?php
//连接到数据库
$mysqli = new mysqli("localhost", "username", "password", "database");

//检查数据库连接是否成功
if ($mysqli->connect_errno) {
  die("数据库连接失败：" . $mysqli->connect_error);
}

//处理退货申请
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  $order_id = $_POST["order_id"];
  $reason = $_POST["reason"];
  $description = $_POST["description"];
  
  //将退货记录插入数据库
  $query = "INSERT INTO returns (order_id, reason, description, status, created_at) VALUES ('$order_id', '$reason', '$description', '待审核', NOW())";
  
  if ($result = $mysqli->query($query)) {
    //退货申请成功
    echo "退货申请已提交";
  } else {
    //退货申请失败
    echo "提交退货申请失败：" . $mysqli->error;
  }
}

//关闭数据库连接
$mysqli->close();
?>

This code will receive the POST request, obtain the order number, return reason and return instructions provided by the user, and then insert this data into the "returns" table of the database. If the return request is successful, a success message will be returned; if it fails, an error message will be returned.

3. Front-end display

Finally, we need to display the return application form on the front-end page and send the data to the back-end for processing. Here is a simple HTML and PHP code example:

<form action="return.php" method="POST">
  <label for="order_id">订单号：</label>
  <input type="text" name="order_id" required><br>
  
  <label for="reason">退货原因：</label>
  <select name="reason" required>
    <option value="">请选择退货原因</option>
    <option value="质量问题">质量问题</option>
    <option value="不喜欢">不喜欢</option>
    <option value="尺寸不合适">尺寸不合适</option>
    <!-- 其他退货原因选项 -->
  </select><br>
  
  <label for="description">退货说明：</label>
  <textarea name="description"></textarea><br>
  
  <input type="submit" value="提交退货申请">
</form>

This code will display a return request form, including the order number, reason for return, and return instructions. After the user fills out the form, click the submit button to send the data to the "return.php" file for processing.

Through the above database design, back-end logic and front-end display implementation, we successfully developed an online return application function using PHP. Users can conveniently submit return applications, and website administrators can also query and process return applications at any time. Such functions will improve the user experience and operational efficiency of second-hand recycling websites.

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