WebSocket规范的目标是在浏览器中实现和服务器端双向通信。双向通信可以拓展浏览器上的应用类型，如果你想要用PHP来写websocket应用，那swoole_framework一定是最好的选择,需要的朋友可以参考下
代码如下:
<?php
define('DEBUG', 'on');
define("WEBPATH", str_replace("","/", __DIR__));
require __DIR__ . '/../libs/lib_config.php';
class WebSocket extends SwooleNetworkProtocolWebSocket
{
/**
* 下线时，通知所有人
*/
function onClose($serv, $client_id, $from_id)
{
//将下线消息发送给所有人
//$this->log("onOffline: " . $client_id);
//$this->broadcast($client_id, "onOffline: " . $client_id);
parent::onClose($serv, $client_id, $from_id);
}
/**
* 接收到消息时
* @see WSProtocol::onMessage()
*/
function onMessage($client_id, $ws)
{
$this->log("onMessage: ".$client_id.' = '.$ws['message']);
$this->send($client_id, "Server: ".$ws['message']);
//$this->broadcast($client_id, $ws['message']);
}
function broadcast($client_id, $msg)
{
foreach ($this->connections as $clid => $info)
{
if ($client_id != $clid)
{
$this->send($clid, $msg);
}
}
}
}
$AppSvr = new WebSocket();
$AppSvr->loadSetting(__DIR__."/swoole.ini"); //加载配置文件
$AppSvr->setLogger(new SwooleLogEchoLog(true)); //Logger
$server = new SwooleNetworkServer('0.0.0.0', 9503);
$server->setProtocol($AppSvr);
//$server->daemonize(); //作为守护进程
$server->run(array('worker_num' =>4));
