websocket服务端PHP代码

在网上看到一个高手写的PHP代码就直接拉下来修改了一下，原贴地址暂时没找到，找到了贴回来
2016年6月18日
这位大佬写的很详细，看他的博客会好一点
http://blog.jnecw.com/p/1523

//socket.phpset_time_limit(0);//永不超时class socket{    private $host = '127.0.0.1';    private $port = 8080;    private $maxuser = 10;    public  $accept = array(); //连接的客户端    private $cycle = array(); //循环连接池    private $isHand = array();//握手信息    //加载socket配置    function __construct($host, $port, $max) {        $this->host = $host;        $this->port = $port;        $this->maxuser = $max;    }    //挂起socket    public function start_server() {        //创建一个socket        $this->socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);        //配置socket        socket_set_option($this->socket, SOL_SOCKET, SO_REUSEADDR, TRUE);        //绑定接口，最多10个人连接，超过的客户端连接会返回WSAECONNREFUSED错误        socket_bind($this->socket, $this->host, $this->port);        //监听接口        socket_listen($this->socket, $this->maxuser);        while(TRUE) {            //获取所有socket连接            $this->cycle = $this->accept;            $this->cycle[] = $this->socket;            //阻塞用，有新连接时才会结束            socket_select($this->cycle, $write, $except, null);            foreach ($this->cycle as $k => $v) {                //当socket运行到连接池最后一位时，开始添加连接                if($v === $this->socket) {                    //如果socket连接失败，跳出本次循环                    if (($accept = socket_accept($v)) < 0) {                        continue;                    }                    //连接成功加入连接池                    $this->add_accept($accept);                    continue;                }                //在连接池中搜索socket连接ID                $acceptId = array_search($v, $this->accept);                //如果连接没有保存至连接池，跳出本次循环                if ($acceptId === NULL) {                    continue;                }                //没消息的socket就断开                if (!@socket_recv($v, $data, 1024, 0) || !$data) {                    $this->close($v);                    continue;                }                //检查是否握手                if (!$this->isHand[$acceptId]) {                    //进行握手                    $this->upgrade($v, $data, $acceptId);                    continue;                }                //将数据进行解码                $data = $this->decode($data);                //将信息返回给客户端                $this->send_to_user($v,$data);            }            sleep(1);        }    }    /**     * 新建一个连接     * @param $accept 套接号     */    private function add_accept($accept) {        $this->accept[] = $accept;        $accept = array_keys($this->accept);        //获取新连接的key值，用于跟握手信息绑定        $acceptId = end($accept);        //添加初次连接用户握手信息        $this->isHand[$acceptId] = FALSE;    }    /**     * 关闭一个连接     * @param $accept 套接号     */    private function close($accept) {        //在连接池中搜索套接号        $acceptId = array_search($accept, $this->accept);        //断开socket连接        socket_close($accept);        //销毁变量        unset($this->cycle[$acceptId]);        unset($this->accept[$acceptId]);        unset($this->isHand[$acceptId]);    }    /**     * 响应升级协议，与websocket进行握手     * @param $accept 套接号     * @param $data websocket发送的数据     * @param $acceptId 与套接号绑定的Id     */    private function upgrade($accept, $data, $acceptId) {        //用正则表达式获取websocket传输过来的key值        if (preg_match("/Sec-WebSocket-Key: (.*)\r\n/",$data,$match)) {            //服务端生成对应key值返回            $key = base64_encode(sha1($match[1] . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true));            $upgrade  = "HTTP/1.1 101 Switching Protocol\r\n" .                "Upgrade: websocket\r\n" .                "Connection: Upgrade\r\n" .                "Sec-WebSocket-Accept: " . $key . "\r\n\r\n";  //必须以两个回车结尾            //向套接口写入数据            socket_write($accept, $upgrade, strlen($upgrade));            $this->isHand[$acceptId] = TRUE;        }    }    /**     * 编码信息     * @param $data 需要编码的数据     */    private function frame($data){        //将数据转为数组，一个元素长度最高为125        $array = str_split($data, 125);        //添加头文件信息，不然前台无法接受        if (count($array) == 1){            return "\x81" . chr(strlen($array[0])) . $array[0];        }        $ns = "";        foreach ($data as $v){            $ns .= "\x81" . chr(strlen($v)) . $v;        }        return $ns;    }    /**     * 按照websocket协议进行解码     * @param $buffer 需要解码的数据     */    private function decode($buffer) {        $len = $masks = $data = $decoded = null;        //获取传递过来数据长度        $len = ord($buffer[1]) & 127;        if ($len === 126) {            $masks = substr($buffer, 4, 4);            $data = substr($buffer, 8);        }        else if ($len === 127) {            $masks = substr($buffer, 10, 4);            $data = substr($buffer, 14);        }        else {            $masks = substr($buffer, 2, 4);            $data = substr($buffer, 6);        }        //        for ($index = 0; $index < strlen($data); $index++) {            $decoded .= $data[$index] ^ $masks[$index % 4];        }        return $decoded;    }    /**     * 向所有连接至socket的用户发送消息     * @param $accept 套接号     * @param $data 发送的数据     */    private function send_to_user($accept, $data){        //添加头文件信息        $data = $this->frame($data);        socket_write($accept, $data, strlen($data));    }}

如何调用

//index.phprequire('socket.php');//设置连接信息$ws = new socket('192.168.0.114', '8080', 10);//开启socket服务端$ws->start_server();

用命令行打开index.php就可以挂起socket服务器了