php使用event扩展的io复用测试的示例

发布:smiling　来源: PHP粉丝网　添加日期：2022-03-28 18:37:36　浏览: 评论：0　

这篇文章主要介绍了php使用event扩展的io复用测试的示例，帮助大家更好的理解和使用php，感兴趣的朋友可以了解下。

先要安装event扩展,这样才可以使用libevent的事件机制

pecl install event

测试代码

//连接重用

//创建资源流的上下文

$context=stream_context_create([

  'socket'=>[

    'backlog'=>2000

  ]]);

stream_context_set_option($context,'socket','so_reuseaddr',1); //设置连接重用

//sock_set_option($this->server, SOL_SOCKET, SO_REUSEADDR, 1); //复用还处于 TIME_WAIT

$socket = stream_socket_server("tcp://0.0.0.0:8070", $errno, $errstr,STREAM_SERVER_BIND | STREAM_SERVER_LISTEN,$context);

stream_set_blocking($socket,false);//非阻塞

//绑定事件

$base=new EventBase();

//监听服务端的socket

$event=new Event($base,$socket,Event::PERSIST |Event::READ | Event::WRITE,function ($socket)use(&$base){

  $client = stream_socket_accept($socket);

  //stream_set_blocking($client,false);//非阻塞

//    var_dump($client);

//    $content='21335435';

//    $string="HTTP/1.1 200 OK\r\n";

//    $string.="Content-Type: text/html;charset=utf-8\r\n";

//    $string.="Content-Length: ".strlen($content)."\r\n\r\n";

//    fwrite($client,$string.$content);

//    fclose($client);

  //global $base;

  //var_dump($socket,$client);

  $base=new EventBase();

  //监听客户端socket

  $event=new Event($base,$client,Event::PERSIST |Event::READ | Event::WRITE,function ($client){

    $msg=fread($client,65535);

//

//     if($msg){ //匹配请求头包含了keep-alive

//

//     }

    $content='hello world';

    $string="HTTP/1.1 200 OK\r\n";

    $string.="Content-Type: text/html;charset=utf-8\r\n";

    $string.="Connection: keep-alive\r\n";

    $string.="Content-Length: ".strlen($content)."\r\n\r\n";

    fwrite($client,$string.$content);

    fclose($client);



    //当socket断开连接，删除事件

    $event->del();//删除事件

  });

  $event->add(); //加入事件监听

  $base->loop();

  //监视客户端

  //$event->del();//删除事件

});

$event->add(); //加入事件监听

var_dump($base->loop()); //调度挂起事件监听