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 < 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' => '[email protected]'];
    $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();