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How to use PHP to implement the e-book reading function of WeChat applet?
With the rapid development of mobile Internet, e-book reading has become one of the important ways for people to obtain knowledge. As a lightweight application, WeChat applet has also begun to play an important role in mobile applications. This article will introduce how to use PHP to implement the e-book reading function of WeChat applet and give specific code examples.
First of all, we need to understand the basic architecture and development specifications of WeChat applet. The WeChat applet adopts a development model with front-end and back-end separation. The front-end uses WXML and WXSS for page layout and style definition, and the back-end uses PHP for data processing.
1. Create database and table structure
First, we need to create a database to store e-book related information. Assume that our database is named "ebook" and create a table named "books" to store e-book information, including book title, author, cover image, book path and other fields.
2. Write PHP back-end interface
<?php // 连接数据库 $conn = new mysqli('localhost', 'root', 'password', 'ebook'); if ($conn->connect_errno) { die('数据库连接错误'); } // 查询数据库中的电子书列表 $result = $conn->query("SELECT * FROM books"); if ($result->num_rows > 0) { $books = array(); while ($row = $result->fetch_assoc()) { $books[] = array( 'id' => $row['id'], 'title' => $row['title'], 'author' => $row['author'], 'cover' => $row['cover'] ); } echo json_encode($books); } else { echo '暂无电子书'; } // 关闭数据库连接 $conn->close(); ?>
<?php // 连接数据库 $conn = new mysqli('localhost', 'root', 'password', 'ebook'); if ($conn->connect_errno) { die('数据库连接错误'); } // 获取电子书ID $bookId = $_GET['bookId']; // 查询数据库中指定ID的电子书内容 $result = $conn->query("SELECT * FROM books WHERE id = $bookId"); if ($result->num_rows > 0) { $book = $result->fetch_assoc(); $bookPath = $book['path']; $content = file_get_contents($bookPath); echo $content; } else { echo '电子书不存在'; } // 关闭数据库连接 $conn->close(); ?>
3. Write the front-end code for the WeChat mini program
{ "pages": [ "pages/index/index", "pages/book/book" ], "permission": { "scope.userLocation": { "desc": "你的位置信息将用于小程序展示" } } }
<view> <block wx:for="{{books}}" wx:key="id"> <view class="book-item" bindtap="openBook"> <image src="{{item.cover}}" class="cover" /> <text class="title">{{item.title}}</text> <text class="author">{{item.author}}</text> </view> </block> </view>
.book-item { margin: 10px; padding: 10px; border: 1px solid #ccc; } .cover { width: 100px; height: 150px; } .title { font-size: 16px; margin-top: 5px; } .author { color: #999; font-size: 14px; margin-top: 2px; }
// 获取电子书列表数据 function getBooks() { wx.request({ url: 'https://yourdomain.com/getBooks.php', success: function(res) { if (res.statusCode === 200) { // 更新页面数据 that.setData({ books: res.data }); } }, fail: function() { wx.showToast({ title: '获取电子书数据失败', icon: 'none' }); } }); } Page({ data: { books: [] }, onLoad: function() { // 获取电子书列表数据 getBooks(); }, openBook: function(e) { // 跳转到电子书阅读页面,并传递电子书ID wx.navigateTo({ url: '/pages/book/book?id=' + e.currentTarget.dataset.id }); } });
<view class="content">{{content}}</view>
.content { margin: 10px; padding: 10px; font-size: 16px; line-height: 1.8; text-indent: 20px; text-align: justify; }
// 获取电子书内容 function getBookContent(id) { wx.request({ url: 'https://yourdomain.com/getBookContent.php?bookId=' + id, success: function(res) { if (res.statusCode === 200) { // 更新页面数据 that.setData({ content: res.data }); } }, fail: function() { wx.showToast({ title: '获取电子书内容失败', icon: 'none' }); } }); } Page({ data: { content: '' }, onLoad: function(options) { // 获取电子书ID var bookId = options.id; // 获取电子书内容 getBookContent(bookId); } });
The above is the specific code implementation of using PHP to implement the e-book reading function of the WeChat applet. By creating a database and table structure, writing a PHP back-end interface, and writing a WeChat applet front-end code, we can implement a simple e-book reading applet. This is just a basic example, and it needs to be expanded and optimized according to actual needs in actual development. I hope this article can be helpful in using PHP to implement the e-book reading function of WeChat applet.
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