diff --git a/blog/php-basic/function.md b/blog/php-basic/function.md
index 0bba9bdcd22c7db2ff99cffbce5db19799556f4e..70ee8bbb3a3aa22fd5a135c8c59d0e9dbe2e2b95 100644
--- 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
diff --git a/blog/php-basic/include.md b/blog/php-basic/include.md
index 6e0bbe52026cfa10b830ff99e58844d872fd0537..8decfc52c434ec67d33c11b72a7b4d3e6355af39 100644
--- a/blog/php-basic/include.md
+++ b/blog/php-basic/include.md
@@ -1,4 +1,4 @@
-# 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');
```
diff --git a/blog/php-basic/index.md b/blog/php-basic/index.md
index 390745db5256183881d08ea4244c56ad118ea47d..d60de13c5c33c4b5ef8d735ca28cc88c17333025 100644
--- 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)
diff --git a/blog/websocket/index.html b/blog/websocket/index.html
new file mode 100644
index 0000000000000000000000000000000000000000..f902573d9931f0d44e49a4b7edd3951bd472f35e
--- /dev/null
+++ b/blog/websocket/index.html
@@ -0,0 +1,39 @@
+
+
+
+
+
+
+
+
+ WebSocket Demo
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/blog/websocket/package.json b/blog/websocket/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..a771409883efa3433ea716a40d665339f23db41b
--- /dev/null
+++ b/blog/websocket/package.json
@@ -0,0 +1,19 @@
+{
+ "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"
+ }
+}
diff --git a/blog/websocket/server.js b/blog/websocket/server.js
new file mode 100644
index 0000000000000000000000000000000000000000..c4c7b74b9834f8782f5607892f315b8ba866633c
--- /dev/null
+++ b/blog/websocket/server.js
@@ -0,0 +1,21 @@
+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);