fix

9c3341dc · 彭世瑜 · efa0f95f · 9c3341dc · 9c3341dc · 9c3341dc
6 changed file
--- a/blog/php-basic/function.md
+++ b/blog/php-basic/function.md
@@ -182,7 +182,7 @@ echo $hello;
 1、作用域分类：
- 超全局变量：系统定义的变量（预定义变量：$\_POST）
+- 超全局变量：系统定义的变量（预定义变量：`$_POST`）
  - 没有访问限制
 - 全局变量：函数外部定义的变量
  - 只允许在全局空间中使用，理论上函数内部不可用

--- a/blog/php-basic/include.md
+++ b/blog/php-basic/include.md
-# PHP 文件包含
+# PHP 文件包含include/require
 在一个 PHP 脚本中，去将另一个文件包含进来
@@ -19,7 +19,7 @@
 语法
-```
+```php
 include '文件路径';
 include('文件路径');
 ```

--- a/blog/php-basic/index.md
+++ b/blog/php-basic/index.md
@@ -16,9 +16,9 @@
 7. [PHP 常用的系统函数](blog/php-basic/system.md)
-[PHP 文件包含](blog/php-basic/include.md)
+8. [PHP 文件包含include/require](blog/php-basic/include.md)
-[PHP 函数 function](blog/php-basic/function.md)
+9. [PHP 函数 function](blog/php-basic/function.md)
 [PHP 错误处理 error](blog/php-basic/error.md)

--- a/blog/websocket/index.html
+++ b/blog/websocket/index.html
+<!-- index.html -->
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible"
+          content="IE=edge">
+    <meta name="viewport"
+          content="width=device-width, initial-scale=1.0">
+    <title>WebSocket Demo</title>
+</head>
+<body>
+    <input type="text">
+    <button>发送</button>
+    <div id="content"></div>
+    <script src="https://cdn.bootcdn.net/ajax/libs/socket.io/4.4.1/socket.io.min.js"></script>
+    <script>
+        var socket = io('http://localhost:8080');
+        var content = document.getElementById('content');
+        var input = document.querySelector('input');
+        var button = document.querySelector('button');
+        // 发送消息
+        button.addEventListener('click', function () {
+            socket.emit('message', input.value);
+        });
+        // 接收服务器消息
+        socket.on('message', function (data) {
+            content.innerHTML += data + '<br>';
+        });
+    </script>
+</body>
+</html>
\ No newline at end of file
--- a/blog/websocket/package.json
+++ b/blog/websocket/package.json
+{
+  "name": "websocket",
+  "version": "1.0.0",
+  "description": "",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node server.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "dayjs": "^1.11.1",
+    "express": "^4.17.3",
+    "nodejs-websocket": "^1.7.2",
+    "socket.io": "^4.4.1"
+  }
+}
--- a/blog/websocket/server.js
+++ b/blog/websocket/server.js
+const { Server } = require('socket.io');
+const { createServer } = require('http');
+const httpServer = createServer();
+// 处理跨域
+const io = new Server(httpServer, {
+  cors: {
+    origin: '*',
+  },
+});
+io.on('connection', (socket) => {
+  // 接收数据
+  socket.on('message', (data) => {
+    // 发送数据
+    socket.emit('message', data);
+  });
+});
+httpServer.listen(8080);