php 简单消息推送(含源码)

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我的代码

入口代码 index.html

<!DOCTYPE HTML><html><head>    <title>反ajax推送</title>    <style>        .send{color:#555;text-align: left;}        .require{color:blue;text-align: right;}        .content_box{text-align: center;margin: 20px;                    border: 1px solid #ddd;padding: 20px;}    </style>    <script src="http://code.jquery.com/jquery-1.11.2.min.js"></script></head><body>    <div class="content_box" id="content_box_title" style="border: none;">消息框</div>    <div class="content_box" id="content_box">    </div>    <div style="width: 450px;margin: 0 auto;">        <select id="username" style="font-size: 20px;">            <option value="1" selected="selected">1</option>            <option value="2">2</option>        </select>        <input type="text" style="font-size: 20px;" value="" id="send_text">        <button id="btn_send" style="font-size: 20px;">发送</button>        <button id="btn_link" style="font-size: 20px">连接</button>    </div>    <div class="error_tip" id="error_tip" style="color: red;">    </div>    <script>        $(function(){            //发送消息            $('#btn_send').click(function(){                var send_text = $('#send_text').val();                if(send_text.length <= 0){                    $('#error_tip').html('不能输入空值');                }else{                    send(send_text);                }            });            //按回车键发送消息            $('#send_text').on('keyup',function(e){                if(e.keyCode == 13){                    $('#btn_send').trigger('click');                }            });            //建立通讯链接            $('#btn_link').click(function(){                connect();                var _this = $(this);                _this.attr('disabled',true);                _this.html('已连接');            });        });        //建立通讯连接函数        function connect(){            $('#content_box_title').html($('#username').val()+'的消息窗口');            $.ajax({                data:{'user':$('#username').val()},                url:'ajaxPush.php',                type:'get',                timeout:0,                dataType:'json',                success:function(data){                    $('#content_box').append('<div class="require">'+data.msg+'</div>');                    connect();                }            });        }        //发送消息函数        function send(massege){            var user =$('#username').val();            $.getJSON('write.php',{'msg':massege,'user':user},function(data){                if(data.sf){                    $('#content_box').append('<div class="send">'+massege+'</div>');                    $('#send_text').val('');                }else{                    $('#error_tip').html('输入保存错误！');                }            });        }    </script></body></html>

ajax处理输入 write.php

<?php/** * Created by TXM. * Time: 2015/4/18 13:13 * function: */$filename  = dirname(__FILE__).'/data.txt';$isread_file = dirname(__FILE__).'/isread.txt';$user = dirname(__FILE__).'/user.txt';//写入消息，消息未读，谁发送的消息file_put_contents($filename,$_GET['msg']);file_put_contents($isread_file,'0');file_put_contents($user,$_GET['user']);echo json_encode(array('sf'=>true));

长轮询推送 ajaxPush.php

<?php/** * Created by TXM. * Time: 2015/4/18 13:12 * function: */$filename  = dirname(__FILE__).'/data.txt';$isread_file = dirname(__FILE__).'/isread.txt';$userfile = dirname(__FILE__).'/user.txt';$get_user = $_GET['user'] == '1'?'2':'1';$msg='';while(1){    $msg = file_get_contents($filename);    $isread = file_get_contents($isread_file);    $user = file_get_contents($userfile);    //是对方发送的消息，设置消息已读，退出循环。    if($isread == '0' && $get_user == $user){        file_put_contents($isread_file,'1');        break;    }    sleep(1);}echo json_encode(array('msg'=>$msg));

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