使用swoole编写简单的echo服务器

server.php代码如下：

<?php
class EchoServer {
    protected $serv = null;

    public function __construct() {
        $this->serv = new swoole_server('0.0.0.0', 8888);
        //配置参数
        $this->serv->set(array(
            'worker_num' => 4,
            'daemonize' => 0,
        ));
        //注册回调函数
        $this->serv->on('start', array($this, 'start'));
        $this->serv->on('connect', array($this, 'connect'));
        $this->serv->on('receive', array($this, 'receive'));
        $this->serv->on('close', array($this, 'close'));
        //启动服务
        $this->serv->start();
    }

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

    //有客户端连接时
    public function connect($serv, $fd) {
        echo "connect \n";
        $serv->send($fd, "hello \n");
    }

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

    public function receive($serv, $fd, $from_id, $data) {
        echo "get message {$fd} : {$data} \n";
        //向客户端发送信息
        $serv->send($fd, $data . "\n");
    }
}

$serv = new EchoServer();

client.php代码如下：

<?php
class EchoClient {
    protected $client = null;

    public function __construct() {
        //注意这里需设置为异步，不然下面无法设置事件回调函数
        $this->client = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC);

        $this->client->on('connect', array($this, 'connect'));
        $this->client->on('receive', array($this, 'receive'));
        $this->client->on('close', array($this, 'close'));
        $this->client->on('error', array($this, 'error'));
        //连接服务端
        $this->client->connect('0.0.0.0', 8888);
    }

    public function connect($client) {
        echo "connect \n";
    }

    public function receive($client, $data) {
        echo "server send: {$data}";

        //向标准输出写入数据
        fwrite(STDOUT, "请输入消息：");
        //获取标准输入数据
        $msg = trim(fgets(STDIN));
        //向服务端发送数据
        $client->send($msg);
    }

    public function close($client) {
        echo "close \n";
    }

    public function error($client) {
        echo "error \n";
    }
}

$cli = new EchoClient();

然后分别运行这两个脚本

> /data/php56/bin/php server.php
> /data/php56/bin/php client.php　　

运行结果如下：