PHP를 사용하여 WeChat 애플릿의 문서 읽기 기능을 구현하는 방법은 무엇입니까?

CREATE DATABASE `document_db`;

CREATE TABLE `documents` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(100) NOT NULL,
  `content` text NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

<?php
   $servername = "localhost";
   $username = "your_username";
   $password = "your_password";
   $dbname = "document_db";

   // 创建数据库连接
   $conn = new mysqli($servername, $username, $password, $dbname);

   // 检查连接是否成功
   if ($conn->connect_error) {
      die("连接失败: " . $conn->connect_error);
   }

   // 执行查询
   $sql = "SELECT * FROM documents";
   $result = $conn->query($sql);

   // 处理查询结果
   if ($result->num_rows > 0) {
      while($row = $result->fetch_assoc()) {
         echo "标题: " . $row["title"]. " - 内容: " . $row["content"]. "<br>";
      }
   } else {
      echo "没有文档";
   }

   // 关闭数据库连接
   $conn->close();
?>

<?php
   $servername = "localhost";
   $username = "your_username";
   $password = "your_password";
   $dbname = "document_db";

   // 创建数据库连接
   $conn = new mysqli($servername, $username, $password, $dbname);

   // 检查连接是否成功
   if ($conn->connect_error) {
      die("连接失败: " . $conn->connect_error);
   }

   // 获取待添加的文档标题和内容
   $title = $_POST["title"];
   $content = $_POST["content"];

   // 执行添加文档的SQL语句
   $sql = "INSERT INTO documents (title, content) VALUES ('$title', '$content')";

   if ($conn->query($sql) === TRUE) {
      echo "文档添加成功";
   } else {
      echo "文档添加失败: " . $conn->error;
   }

   // 关闭数据库连接
   $conn->close();
?>

<?php
   $servername = "localhost";
   $username = "your_username";
   $password = "your_password";
   $dbname = "document_db";

   // 创建数据库连接
   $conn = new mysqli($servername, $username, $password, $dbname);

   // 检查连接是否成功
   if ($conn->connect_error) {
      die("连接失败: " . $conn->connect_error);
   }

   // 获取待删除的文档ID
   $id = $_POST["id"];

   // 执行删除文档的SQL语句
   $sql = "DELETE FROM documents WHERE id=$id";

   if ($conn->query($sql) === TRUE) {
      echo "文档删除成功";
   } else {
      echo "文档删除失败: " . $conn->error;
   }

   // 关闭数据库连接
   $conn->close();
?>

wx.request({
   url: 'http://your_server_url/get_documents.php',
   method: 'GET',
   success: function(res) {
      console.log(res.data);
   }
});

wx.request({
   url: 'http://your_server_url/add_document.php',
   method: 'POST',
   data: {
      title: '文档标题',
      content: '文档内容'
   },
   success: function(res) {
      console.log(res.data);
   }
});

wx.request({
   url: 'http://your_server_url/delete_document.php',
   method: 'POST',
   data: {
      id: 1 // 待删除文档的ID
   },
   success: function(res) {
      console.log(res.data);
   }
});