websoket的简单应用

第一步。下载swoole

wget https://pecl.php.net/get/swoole-1.8.11.tgz
tar zxvf swoole-1.8.11.tgz
cd swoole-1.8.11
phpize
./configure
make && make install

第二步，配置php.ini

vi /etc/php.ini
添加以下内容
extension=swoole.so

重启nginx/apache

在web根目录

vi server.php


<?php

//创建websocket服务器对象，监听0.0.0.0:9502端口
$ws = new swoole_websocket_server("0.0.0.0", 9502);

//监听WebSocket连接打开事件
$ws->on('open', function ($ws, $request) {
    var_dump($request->fd, $request->get, $request->server);
    $GLOBALS['fd'][] = $request->fd;
    //$ws->push($request->fd, "hello, welcome\n");
});

//监听WebSocket消息事件
$ws->on('message', function ($ws, $frame) {
    echo "Message: {$frame->data}\n";
      foreach($GLOBALS['fd'] as $key => $val){
            $ws->push($val,$frame->data);
      }
   //$ws->push($frame->fd, "{$frame->data}");
});

//监听WebSocket连接关闭事件
$ws->on('close', function ($ws, $fd) {
    echo "client-{$fd} is closed\n";
});

$ws->start();

启动服务

php server.php

本地新建文件

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title></title>
</head>
<body>
	<input type="text" id="color">
	<button onclick="doSend()">变色</button>
</body>
</html>
<script>
var wsServer = 'ws://192.168.1.212:9502';   //ip地址为服务器IP地址
var websocket = new WebSocket(wsServer);
websocket.onopen = function (evt) {
    console.log("Connected to WebSocket server.");
};

websocket.onclose = function (evt) {
    console.log("Disconnected");
};

websocket.onmessage = function (evt) {
	//alert(evt.data)
	 document.body.style.backgroundColor="#"+evt.data;
    console.log('Retrieved data from server: ' + evt.data);
};

websocket.onerror = function (evt, e) {
    console.log('Error occured: ' + evt.data);
};
function doSend() { 
		var color = document.getElementById("color").value;
        websocket.send(color); 
} 
</script>

测试：

可以多开几个页面，在任意一个页面输入6位颜色编码后，所有页面背景颜色均会改变。

websoket的简单应用

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