How to use PHP to implement the document reading function of WeChat applet?

How to use PHP to implement the document reading function of WeChat applet?

WeChat mini program is a very popular mobile application at present, in which the document reading function is a very important part of the mini program. This article will introduce how to use PHP to implement the document reading function of WeChat applet and provide specific code examples.

1. Environment preparation

First, we need to prepare the server environment for running PHP. You can use tools such as WAMP and XAMPP, or install Apache, MySQL and PHP on a Linux server to build a local development environment.

2. Create a database

Next, we need to create a MySQL database to store the data required for the document reading function. You can use tools such as phpMyAdmin to create a database, or execute the following SQL statement in the MySQL command line to create a database:

CREATE DATABASE `document_db`;

Then, create a data table named documents for Store document data. The structure of the data table is as follows:

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;

3. Write PHP code

We can use PHP to provide the function of adding, deleting, modifying, and checking documents, and call these interfaces through WeChat applet to read documents. . The following is a specific PHP code example:

1. PHP code to connect to the database and execute the query:

<?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();
?>

2. PHP code to add documents:

<?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();
?>

3. PHP code to implement document deletion:

<?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();
?>

4. Mini program calling interface

Through the above PHP code, we have implemented the document Add, delete, modify and check functions. Next, call these interfaces in the WeChat applet to read the document.

1. The applet code to get the document list:

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

2. The applet code to add the document:

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);
   }
});

3. Mini program code for deleting documents:

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);
   }
});

Through the above steps, we can use PHP to implement the document reading function of the WeChat mini program. These codes are just examples and you can modify and extend them to suit your specific needs.

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