Swoole 2.1 正式版：协程＋通道带来全新的 PHP 编程模式

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。

项目详情：https://www.oschina.net/p/swoole-server

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

{

$read_list = [$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

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

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。