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HomeBackend DevelopmentPHP Tutorial PHP的异步并行网络扩展swoole怎么使用

PHP的异步并行网络扩展swoole如何使用

Swoole是PHP的异步并行扩展,有点像Node.js,但swoole既支持同步又支持异步,比node更强大。Swoole扩展是基于epoll高性能事件轮询,并且是多线程的,性能非常好。

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Swoole除了提供网络Server/Client的功能之外,还提供了Task异步任务管理器,可以使你的程序中某些处理慢的函数异步去执行。

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本文说下如何使用swoole扩展。

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第一步 安装

swoole仅支持Linux/FreeBSD/Mac,如果你使用的是Windows系统,请安装一个虚拟机,VirtualBox/VMWare都可以。然后在虚拟机里安装Linux。

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swoole已经加入到PHP的官方扩展库中,所以在Linux系统里只需要执行

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pecl install swoole

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即可安装。安装完后修改php.ini,加入extension=swoole.so。然后查看php -m 或者 phpinfo,如果出现swoole证明安装成功了。

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第二步 编写Server程序

创建一个PHP脚本文件server.php,代码内容:

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$serv = new swoole_server("127.0.0.1", 9501);
$serv->on('connect', function ($serv, $fd){
    echo "Client:Connect.\n";
});
$serv->on('receive', function ($serv, $fd, $from_id, $data) {
    $serv->send($fd, 'Swoole: '.$data);
});
$serv->on('close', function ($serv, $fd) {
    echo "Client: Close.\n";
});
$serv->start();

?然后执行:

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php server.php

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?使用telnet连接到你的服务器:

telnet 127.0.0.1 9501
> hello world
> Swoole: hello world

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?是不是非常简单,仅仅11行代码就创建了一个异步高并发的TCPServer,通过底层的网络来进行数据收发。接下来就是你就可以做你想要做的事情了,即时聊天,文件收发,通信等等。

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