How to implement message push in php

How to develop the message push function when we encounter it?

1. Ajax polling, requesting server data regularly (Recommended learning: PHP video tutorial)

Passed Observing that thinkphp official website seems to also use this method, this method is organized below:

Notify.php
//获取通知消息
    public function getNotifyCount()
    {
        $msg = db('message_logs')->where('isscan',0)->count();
        RestfulTools::restData($msg); //这里是封装好的json_encode方法
    }

notify.js
<span class="am-icon-envelope-o"></span> 消息 <span class="am-badge am-badge-warning" id="msgCount"> 
{$msgCount}  //这是是通过tp的 assign方法分配过来的变量，作为初始值
</span>

<script type="text/javascript">

    var getting = {
        url:"{:url(&#39;Notify/getNotifyCount&#39;)}",
        dataType:&#39;json&#39;,
        success:function(res) {
            console.log(res);
            var msgCount = res.result;
            $("#msgCount").html(msgCount); //用js的 html方法去改变id为msgCount的值
        }
    };

    //Ajax定时访问服务端,这里是3分钟请求一次。

    window.setInterval(function(){
        $.ajax(getting)
    },180000);

</script>

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