Swoole 2.1 正式版发布，协程+通道带来全新的 PHP 编程模式

韩天峰 · · 3394 次点击 · · 开始浏览

这是一个创建于的文章，其中的信息可能已经有所发展或是发生改变。

PHP的异步、并行、高性能网络通信引擎 Swoole 已发布 2.1.0 版本。新版本提供了全新的短名 API，完整支持了协程（Coroutine）+通道（Channel）特性，为 PHP 语言带来了全新的编程模式。Swoole 2.1的API借鉴至Go语言，在此向Go语言开发组致敬。

Coroutine

go(function () { co::sleep(0.5); echo "hello"; }); go("test"); go([$object, "method"]);

Channel

$chan = new chan(128); $chan->push(1234); $chan->push(1234.56); $chan->push("hello world"); $chan->push(["hello world"]); $chan->push(new stdclass); $chan->push(fopen("test.txt", "r+")); while($chan->pop());

与Go语言的chan不同，由于PHP是动态语言，所以可以向通道内投递任意类型的变量。

Channel Select

$c1 = new chan(3); $c2 = new chan(2); $c3 = new chan(2); $c4 = new chan(2); $c3->push(3); $c3->push(3.1415); $c4->push(3); $c4->push(3.1415); go(function () use ($c1, $c2, $c3, $c4) { echo "select\n"; for ($i = 0; $i < 1; $i++) { $read_list = [$c1, $c2]; $write_list = [$c3, $c4]; // $write_list = null; $result = chan::select($read_list, $write_list, 5); var_dump($result, $read_list, $write_list); foreach($read_list as $ch) { var_dump($ch->pop()); } foreach($write_list as $ch) { var_dump($ch->push(666)); } echo "exit\n"; } }); go(function () use ($c3, $c4) { echo "producer\n"; co::sleep(1); $data = $c3->pop(); echo "pop[1]\n"; var_dump($data); }); go(function () { co::sleep(10); }); go(function () use ($c1, $c2) { co::sleep(1); $c1->push("resume"); $c2->push("hello"); });

MySQL Client

go(function () { $db = new Co\MySQL(); $server = array( 'host' => '127.0.0.1', 'user' => 'root', 'password' => 'root', 'database' => 'test', ); $db->connect($server); $result = $db->query('SELECT * FROM userinfo WHERE id = 3'); var_dump($result); });

Redis Client

go(function () { $redis = new Co\Redis; $res = $redis->connect('127.0.0.1', 6379); $ret = $redis->set('key', 'value'); var_dump($redis->get('key')); });

Http Client

go(function () { $http = new Co\Http\Client("www.google.com", 443, true); $http->setHeaders(function () { }); $ret = $http->get('/'); var_dump($http->body); });

Http2 Client

go(function () { $http = new Co\Http2\Client("www.google.com", 443, true); $req = new co\Http2\Request; $req->path = "/index.html"; $req->headers = [ 'host' => "www.google.com", "user-agent" => 'Chrome/49.0.2587.3', 'accept' => 'text/html,application/xhtml+xml,application/xml', 'accept-encoding' => 'gzip', ]; $req->cookies = ['name' => 'rango', 'email' => 'rango@swoole.com']; $ret = $http->send($req); var_dump($http->recv()); });

其他 API

co::sleep(100); co::fread($fp); co::fwrite($fp, "hello world"); co::gethostbyname('www.google.com');

服务器端

$server = new Co\Http\Server('127.0.0.1', 9501); $server->on('Request', function($request, $response) { $http = new Co\Http\Client("www.google.com", 443, true); $http->setHeaders(function () { "X-Power-By" => "Swoole/2.1.0", }); $ret = $http->get('/'); if ($ret) { $response->end($http->body); } else{ $response->end("recv failed error : {$http->errCode}"); } }); $server->start();

Swoole提供了很多Co\Server、Co\WebSocket\Server、Co\Http\Server、Co\Redis\Server共4个支持协程的Server类，可以在这些服务器程序中使用协程API。

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