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PHP Web real-time message background server push technology GoEasy

高洛峰

Nov 04, 2016 pm 02:50 PM

越来越多的项目需要用到实时消息的推送与接收，怎样用php实现最方便呢？我这里推荐大家使用GoEasy, 它是一款第三方推送服务平台，使用它的API可以轻松搞定实时推送！

浏览器兼容性：GoEasy推送支持websocket 和polling两种连接方式，从而可以支持IE6及其以上的所有版本，同时还支持其它浏览器诸如Firefox, Chrome, Safari等等。

支持不同的开发语言： GoEasy推送提供了Restful API接口，无论你的后台程序用的是哪种语言都可以通过Restful API来实现后台实时推送。如：Java,PHP, C#, Ruby, Python, C, C++， ASP.NET,Node.js...

支持后台及前台推送：后台用Restful API，前台用goeasy.js; 运用十分简单！

PHP Web实时消息后台服务器推送技术-GoEasy

下面我介绍一下使用GoEasy的步骤：

1. 你需要到goeasy官网上注册一个账号,并创建一个应用，应用创建好后系统会默认为它生成两个key: publish key和subscribe key

2. 前台实时订阅及接收

只需要引入goeasy.js,然后调用goeasy的subscribe方法订阅一个channel即可，订阅时无论是用publish key还是subscribe key都可以。通过subscribe的参数 onMessage的回调函数可以实时接收到消息。

3. 前台实时推送

还是需要引入goeasy.js（如果该页面已经引入了可不在引入）,然后调用goeasy的publish方法向已订阅的channel上推送消息即可，推送时只能用publish key。

4. 后台实时推送

调用GoEasy Restful API，用post方式访问http://goeasy.io/goeasy/publish，同时还需要带上三个必要参数：

appkey: publish key

channel: 你订阅了的channel

content: 推送内容

就是这么简单。

下面我将之前写的一个小实例贴出来，里面用了Javascript 在web页面进行订阅，推送，接收，以及取消订阅的例子，里面的appkey用的是goeasy官方的demo 的appkey.

<html>
<head>
<title>GoEasy Test</title>
 
<script type="text/javascript" src="https://cdn.goeasy.io/goeasy.js"></script>
<script type="text/javascript">
    if(typeof GoEasy !== &#39;undefined&#39;){
        var goEasy = new GoEasy({
            appkey: &#39;ba821151-e043-4dfb-a954-c73744c8d323&#39;,
            userId:"222",
            username:"22",
            onConnected:function(){
                console.log("Connect to GoEasy success.");
            } ,
            onDisconnected:function(){
                console.log("Disconnect to GoEasy server.");
            } ,
            onConnectFailed:function(error){
                console.log("Connect to GoEasy failed, error code: "+ error.code+" Error message: "+ error.content);
            }
        });
    }
             
    subscribe();
    function subscribe(){
             goEasy.subscribe({
                channel: &#39;notification&#39;,
                onMessage: function(message){
                    console.log(&#39;Meessage received:&#39;+message.content);
                },
                onSuccess:function(){
 
                    console.log("Subscribe the Channel successfully.");
 
                },
 
                onFailed: function(error){
 
                    console.log("Subscribe the Channel failed, error code: "+ error.code + " error message: "+ error.content);
 
                }
 
            });
 
    }
             
     function publishMessage(){
          goEasy.publish({
                channel: &#39;notification&#39;,
                message: &#39;You received a new notification&#39;,
                onSuccess:function(){
 
                    console.log("Publish message success.");
 
                },
                onFailed: function(error){
 
                    console.log("Publish message failed, error code: "+ error.code +" Error message: "+ error.content);
 
                }
            });
      
     }
                   
     function unsubscribe(){
                goEasy.unsubscribe({
                    channel:"notification",
                    onSuccess: function(){
 
                        console.log("Cancel Subscription successfully.");
 
                    },
                    onFailed: function(error){
 
                        console.log("Cancel the subscrition failed, error code: "+ error.code + "error message: "+ error.content);
                    }
 
                });
            }
         
 </script>
</head>
<body>
  <input type="button" value="publish" onclick="publishMessage()"/>
  <input type="button" value="unsubscribe" onclick="unsubscribe()"/>
  <input type="button" value="subscribe" onclick="subscribe()"/>
</body>
</html>

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