>[danger]**1. 新建swoole.php 并copy官网代码** ~~~ //高性能HTTP服务器 $http = new Swoole\Http\Server("0.0.0.0", 9501); $http->on("start", function ($server) { echo "Swoole http server is started at http://192.168.108.130:9501\n"; }); $http->on("request", function ($request, $response) { $response->header("Content-Type", "text/plain"); $response->end("Hello World\n"); }); $http->start(); ~~~ ***** >[danger]**2. 在终端查看效果**  ***** >[danger]**3. 从代码理解swoole** ~~~ // 实例化swoole服务 $http = new Swoole\Http\Server("0.0.0.0", 9501); // 注册 启动 start 事件 $http->on("start", function ($server) { echo "Swoole http server is started at http://192.168.108.130:9501\n"; }); // 注册 请求 request事件 $http->on("request", function ($request, $response) { $response->header("Content-Type", "text/plain"); $response->end("Hello World\n"); }); // 尝试输出内容查看程序运行顺序 echo "初心\n"; // 启动swoole服务 $http->start(); ~~~ >[danger] 可见注册事件 并未启动，所以echo 先输出内容