Swoole 初識

官方定義：

Swoole：重新定義PHP

PHP的非同步、並行、高性能網路通信引擎，使用純C語言編寫，提供了PHP語言的非同步多線程伺服器，非同步TCP/UDP網路客戶端，非同步MySQL，非同步Redis，資料庫連接池，AsyncTask，消息隊列，毫秒定時器，非同步文件讀寫，非同步DNS查詢。 Swoole內置了Http/WebSocket伺服器端/客戶端、Http2.0伺服器端。
Swoole可以廣泛應用於互聯網、移動通信、企業軟體、雲計算、網路游戲、物聯網、車聯網、智能家居等領域。 使用PHP+Swoole作為網路通信框架，可以使企業IT研發團隊的效率大大提升，更加專註於開發創新產品。

swoole 擴展安裝及案例來源：http://wiki.swoole.com/wiki/page/6.html

簡單案例：

<?php

class Server
{

    private $serv;

    public function __construct()
    {
        $this->serv = new swoole_server("0.0.0.0", 9501);
        $this->serv->set(array(
            'worker_num' => 8,
            'daemonize' => false,
            'max_request' => 10000,
            'dispatch_mode' => 2,
            'debug_mode' => 1
        ));

        $this->serv->on('Start', array($this, 'onStart'));
        $this->serv->on('Connect', array($this, 'onConnect'));
        $this->serv->on('Receive', array($this, 'onReceive'));
        $this->serv->on('Close', array($this, 'onClose'));

        $this->serv->start();
    }

    public function onStart($serv)
    {
        echo "Start\n";
    }

    public function onConnect($serv, $fd, $from_id)
    {
        $serv->send($fd, "Hello {$fd}!");
    }

    public function onReceive(swoole_server $serv, $fd, $from_id, $data)
    {
        echo "Get Message From Client {$fd}:{$data}\n";
    }

    public function onClose($serv, $fd, $from_id)
    {
        echo "Client {$fd} close connection\n";
    }

}

// 啟動伺服器
$server = new Server();

<?php

class Client
{

    private $client;

    public function __construct()
    {
        $this->client = new swoole_client(SWOOLE_SOCK_TCP);
    }

    public function connect()
    {
        if (!$this->client->connect("127.0.0.1", 9501, 1)) {
            echo "Error: {$fp->errMsg}[{$fp->errCode}]\n";
        }
        $message = $this->client->recv();
        echo "Get Message From Server:{$message}\n";

        fwrite(STDOUT, "請輸入消息：");
        $msg = trim(fgets(STDIN));
        $this->client->send($msg);
    }

}

$client = new Client();
$client->connect();

分別打開兩個終端輸入：php server.php　　php client.php 即可看到效果！