PHP用swoole+websocket和redis实现web一对一聊天

发布:smiling　来源: PHP粉丝网　添加日期：2022-01-21 20:36:56　浏览: 评论：0　

这篇文章主要介绍了PHP用swoole+websocket和redis实现web一对一聊天,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧。

Redis 实现每个连接websocket的服务都唯一绑定一个用户，通过用户账号 = websocket fd 存到redis中。

Mysql 实现离线消息池。如果一个用户不在线，则其他用户发送给他的消息暂时存储在mysql。待该用户上线时，再从离线消息池取出发送。

具体参考代码和相应注释：

<?php

$server = new swoole_websocket_server("0.0.0.0", 9052);

$redis = new Redis();

$redis->connect('127.0.0.1', 6379);

$db = new mysqli('127.0.0.1', 'test', 'test', 'thinkphp5');

$server->on('open', function (swoole_websocket_server $server, $request) {

echo "server: handshake success with fd{$request->fd}\n";//$request->fd 是客户端id

});

$server->on('message', function (swoole_websocket_server $server, $frame) {

$data = json_decode($frame->data,true);

if($data['flag'] == 'init'){

  //用户刚连接的时候初始化，每个用户登录时记录该用户对应的fd

  $GLOBALS['redis']->set($data['from'], $frame->fd);

  //处理发给该用户的离线消息

  $sql = "SELECT `from`,content FROM thinkphp5.app_offline WHERE `to`='{$data['from']}' AND `from`='{$data['to']}' AND `status`='0' ORDER BY addtime ASC;";

  if ($result = $GLOBALS['db']->query($sql)) {

   $re = array();

   while ($row = $result->fetch_assoc()) {

    array_push($re, $row);

   }

   $result->free();

   foreach($re as $content){

    $content = json_encode($content);

    $server->push($frame->fd , $content);

   }

   //设置消息池中的消息为已发送

   $sql = "UPDATE thinkphp5.app_offline SET `status`=1 WHERE `to`='{$data['from']}' AND `from`='{$data['to']}';";

   $GLOBALS['db']->query($sql);

  }

}else if($data['flag'] == 'msg'){

  //非初始化的信息发送，一对一聊天，根据每个用户对应的fd发给特定用户

  $tofd = $GLOBALS['redis']->get($data['to']); //消息要发给谁

  $fds = []; //所有在线的用户(打开聊天窗口的用户)

  foreach($server->connections as $fd){

   array_push($fds, $fd);

  }

  if(in_array($tofd,$fds)){

   $tmp['from'] = $data['from']; //消息来自于谁

   $tmp['content'] = $data['content']; //消息内容

   $re = json_encode($tmp);

   $server->push($tofd , $re);

  }else{

   //该玩家不在线(不在聊天室内)，将信息发送到离线消息池

   $time = time();

   $sql = "INSERT INTO thinkphp5.app_offline (`to`,`from`,`content`,`status`,`addtime`) VALUES ('{$data['to']}','{$data['from']}','{$data['content']}','0','{$time}');";

   $GLOBALS['db']->query($sql);

  }

}else if($data['flag'] == 'group'){

  //todo 群聊



}else if($data['flag'] == 'all'){

  //全站广播

  foreach($server->connections as $fd){

   $server->push($fd , $data);

  }

}

});

$server->on('close', function ($ser, $fd) {

echo "client {$fd} closed\n";

});

$server->start();

客户端代码：

<!DOCTYPE html>

<html>

<head>

<title>XST-app</title>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />

<meta name="viewport" content="width=device-width, initial-scale=0.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0" />

<meta name="keywords" content="test" />

<meta name="description" content="test" />

<meta name="author" content="XST-APP" />

<meta content="yes" name="apple-mobile-web-app-capable" />

<meta content="black" name="apple-mobile-web-app-status-bar-style" />

<meta content="telephone=no" name="format-detection" />

　　<style type="text/css">

body{background:url(/static/images/yuyin_bg.jpg);background-size:100%;}

@media all and (min-width: 640px) {

  body,html,.wenwen-footer,.speak_window{width:640px!important;margin:0 auto}

  .speak_window,.wenwen-footer{left:50%!important;margin-left:-320px}

}

input,button{outline:none;}

.wenwen-footer{width:100%;position:fixed;bottom:-5px;left:0;background:#fff;padding:3%;border-top:solid 1px #ddd;box-sizing:border-box;}

.wenwen_btn,.wenwen_help{width:15%;text-align:center;}

.wenwen_btn img,.wenwen_help img{height:40px;}

.wenwen_text{height:40px;border-radius:5px;border:solid 1px #636162;box-sizing:border-box;width:66%;text-align:center;overflow:hidden;margin-left:2%;}

.circle-button{padding:0 5px;}

.wenwen_text .circle-button{font-size:14px;color:#666;line-height:38px;}

.write_box{background:#fff;width:100%;height:40px;line-height:40px;}

.write_box input{height:40px;padding:0 5px;line-height:40px;width:100%;box-sizing:border-box;border:0;}

.wenwen_help button{width:95%;background:#42929d;color:#fff;border-radius:5px;border:0;height:40px;}

#wenwen{height:100%;}

.speak_window{overflow-y:scroll;height:100%;width:100%;position:fixed;top:50px;left:0;}

.speak_box{margin-bottom:70px;padding:10px;}

.question,.answer{margin-bottom:1rem;}

.question{text-align:right;}

.question>div{display:inline-block;}

.left{float:left;}

.right{float:right;}

.clear{clear:both;}

.heard_img{height:60px;width:60px;border-radius:5px;overflow:hidden;background:#ddd;}

.heard_img img{width:100%;height:100%}

.question_text,.answer_text{box-sizing:border-box;position:relative;display:table-cell;min-height:60px;}

.question_text{padding-right:20px;}

.answer_text{padding-left:20px;}

.question_text p,.answer_text p{border-radius:10px;padding:.5rem;margin:0;font-size:14px;line-height:28px;box-sizing:border-box;vertical-align:middle;display:table-cell;height:30px;word-wrap:break-word;}

.answer_text p{background:#fff;}

.question_text p{background:#42929d;color:#fff;text-align:left;}

.question_text i,.answer_text i{width:0;height:0;border-top:5px solid transparent;border-bottom:5px solid transparent;position:absolute;top:25px;}

.answer_text i{border-right:10px solid #fff;left:10px;}

.question_text i{border-left:10px solid #42929d;right:10px;}

.answer_text p a{color:#42929d;display:inline-block;}

.write_list{position:absolute;left:0;width:100%;background:#fff;border-top:solid 1px #ddd;padding:5px;line-height:30px;}

　　</style>

</head>

<body>

<div id="header" class="head">

  <div class="wrap">

    <i class="menu_back"><a href="javascript：history.go(-1);" rel="external nofollow" ></a></i>

    <div class="title">

      <span class="title_d"><p>与 {$tonickname} 的聊天</p></span>

      <div class="clear"></div>

    </div>

    

  </div>

</div>

<input type="hidden" name="myemail" id="myemail" value="{$myemail}" />

<input type="hidden" name="mynickname" id="mynickname" value="{$mynickname}" />

<input type="hidden" name="myavatar" id="myavatar" value="{$myavatar}" />

<input type="hidden" name="toemail" id="toemail" value="{$toemail}" />

<input type="hidden" name="tonickname" id="tonickname" value="{$tonickname}" />

<input type="hidden" name="toavatar" id="toavatar" value="{$toavatar}" />



<div class="speak_window">

<div class="speak_box">

</div>

</div>



<div class="wenwen-footer">

<div class="wenwen_btn left"><img src="/static/images/jp_btn.png"></div>

<div class="wenwen_text left">

  <div class="write_box"><input type="text" class="left" onKeyUp="keyup()" maxlength="100" placeholder="请输入信息(100字以内)..." /></div>

</div>

<div class="wenwen_help right">

   <button onClick="send()" class="right">发送</button>

</div>

<div style="opacity:0;" class="clear"></div>

</div>

<script type="text/javascript">

if ("WebSocket" in window){

  var ws = new WebSocket("ws://192.168.0.1:9052");

  ws.onopen = function(){

   console.log("握手成功");

   var myemail = $("#myemail").val();

   var toemail = $("#toemail").val();

   var arr = {"flag":"init","from":myemail,"to":toemail};

   var str = JSON.stringify(arr);

   ws.send(str);

  };

  ws.onmessage = function(e){

   var toemail = $("#toemail").val();

   var toavatar = $("#toavatar").val();

   var obj = JSON.parse(e.data);

   console.log(e.data);

   //但同时与两个人聊天时，可能两个人的消息都会出现在当前窗口，所以此处加个判断，此窗口只接收当前聊天对象的消息，其他则忽略

   if(obj.from === toemail){

    var ans = '<div class="answer"><div class="heard_img left"><img src="'+toavatar+'"></div>';

     ans += '<div class="answer_text"><p>'+obj.content+'</p><i></i>';

     ans += '</div></div>';

     $('.speak_box').append(ans);

     for_bottom();

   }

  };

  ws.onerror = function(){

   console.log("error");

   var str = '<div class="question">';

   str += '<div class="heard_img right"><img src="/static/images/xitong.jpg"></div>';

   str += '<div class="question_text clear"><p>聊天服务器出现异常，暂时无法提供服务。</p><i></i>';

   str += '</div></div>';

   $('.speak_box').append(str);

   $('.write_box input').val('');

   $('.write_box input').focus();

   autoWidth();

   for_bottom();

  };

  function send() {

   var content = $('.write_box input').val();

  if(content === ''){

   alert('请输入消息！');

   $('.write_box input').focus();

  }else{

    var toemail = $("#toemail").val();

    var myemail = $("#myemail").val();

    var myavatar = $("#myavatar").val();

    var arr = {"flag":"msg","to":toemail,"from":myemail,"content":content};

    var msg = JSON.stringify(arr);

    console.log(msg);

    ws.send(msg);

    var str = '<div class="question">';

    str += '<div class="heard_img right"><img src="'+myavatar+'"></div>';

    str += '<div class="question_text clear"><p>'+content+'</p><i></i>';

    str += '</div></div>';

   $('.speak_box').append(str);

   $('.write_box input').val('');

   $('.write_box input').focus();

   autoWidth();

   for_bottom();

   }



  }

}else{

  alert("您的浏览器不支持 WebSocket!");

}



function for_bottom(){

var speak_height = $('.speak_box').height();

$('.speak_box,.speak_window').animate({scrollTop:speak_height},500);

}



function autoWidth(){

$('.question_text').css('max-width',$('.question').width()-60);

}



autoWidth();



</script>

</body>

</html>

数据表结构：

CREATE TABLE `app_offline` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`from` varchar(50) DEFAULT NULL COMMENT '离线发送方',

`to` varchar(50) DEFAULT NULL COMMENT '离线接收方',

`content` varchar(1000) DEFAULT NULL COMMENT '发送的离线内容',

`status` tinyint(4) DEFAULT '0' COMMENT '发送状态：0-未发送,1-已发送',

`addtime` int(11) DEFAULT NULL COMMENT '发送方发送时间',

PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8