swoole实验版聊天室

“swoole实验版聊天室”是依据一堂swoole培训课内容改编的，结合了bootstrap前端框架、redis数据库、jquery框架等实现基本功能，只是体现了swoole的应用，并不是为了专门写个聊天室。

本程序开发环境：
1.ubuntu16.04.1
2.PHP Version 7.2.21
3.swoole Version 4.4.3
4.Redis Version 4.0.2
安装步骤（略）。
效果如下：

代码如下：

index.php文件

<!DOCTYPE html>
<html>
    <head>
        <title>swoole实验版聊天室</title>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <meta http-equiv="cache-control" content="no-cache">
        <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/css/bootstrap.min.css">
        <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
        <script src="https://cdn.staticfile.org/popper.js/1.12.5/umd/popper.min.js"></script>
        <script src="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/js/bootstrap.min.js"></script>
        <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/4.7.0/css/font-awesome.css">

        <style>
            body{background-color: #191970;}
            @media screen and (min- 992px) {
                    div{display: none}
                    body {background: #fff}
                    body:before {
                        content: "不支持此设备浏览！";
                        position: absolute;
                        left: 10px;
                        top: 30px
                 }
             }
             
            @media screen and (min- 768px) and (max- 991px) {
                    div{display: none}
                    body {background: #fff}
                    body:before {
                        content: "不支持此设备浏览！";
                        position: absolute;
                        left: 10px;
                        top: 30px
                 }
             }
             
            @media screen and (min- 576px) and (max- 767px) {
                #result{
                     100%; 
                    height: 300px; 
                    overflow-y: scroll;
                    margin: 0px;
                    padding: 5px;
                 }
                 #is-open{
                     display: inline-block;
                     border: solid 1px #dcdcdc;
                     padding: 6px;
                     margin: 6px 0px;
                     border-radius: 8px;
                     color: #fff;
                 }
                 .ms {
                     display:inline-block;
                     80%
                 }
                 .msl {
                     display:inline-block;
                     40%;
                     background-color: #66cdaa
                 }
                 .btn {
                     display:inline-block;
                     float: right;
                     20%
                 }
                 .mess{
                     color: #00fa9a;
                     text-align: right
                 }
                 .mess-1{
                     display: inline-block;
                     word-wrap:break-word;
                     word-break:break-all;
                     color: #2f4f4f;
                     background-color:#f4a460;
                     padding: 8px;
                     border-radius: 8px;
                     text-align: left
                 }
                 .mess-1-1, .mess-2-2 {
                      display: inline-block;
                      color: #000;
                      font-weight: bold;
                      background-color: #add8e6;
                  }
                  .mess-1-1{
                      padding: 8px;
                      border-radius: 8px
                  }
                  .mess-2-2{
                      padding: 8px;
                      border-radius: 8px
                  }
                 .mess-2{
                     display: inline-block;
                     word-wrap:break-word;
                     word-break:break-all;
                     color: #696969;
                     background-color:#fff;
                     padding: 8px;
                     border-radius: 8px
                 }
                 .tot{
                     display: inline-block;
                      40%;
                     word-wrap:break-word;
                     word-break:break-all;
                     color: #fff;
                     float: right;
                     margin-top: 3px;
                 }
                 .bottom-box{
                     position: fixed;
                     left: 0px;
                     bottom: 0px;
                     100%;
                     background-color: #191970;
                     padding-top: 10px
                  }
              }
              
            @media screen and (min- 300px) and (max- 575px) {
                #result{
                     100%; 
                    height: 300px; 
                    overflow-y: scroll;
                    margin: 0px;
                    padding: 5px;
                 }
                 #is-open{
                     display: inline-block;
                     border: solid 1px #dcdcdc;
                     padding: 6px;
                     margin: 6px 0px;
                     border-radius: 8px;
                     color: #fff;
                 }
                 .ms {
                     display:inline-block;
                     80%
                 }
                 .msl {
                     display:inline-block;
                     40%;
                     background-color: #66cdaa
                 }
                 .btn {
                     display:inline-block;
                     float: right;
                     20%
                 }
                 .mess{
                     color: #00fa9a;
                     text-align: right
                 }
                 .mess-1{
                     display: inline-block;
                     word-wrap:break-word;
                     word-break:break-all;
                     color: #2f4f4f;
                     background-color:#f4a460;
                     padding: 8px;
                     border-radius: 8px;
                     text-align: left
                 }
                 .mess-1-1, .mess-2-2 {
                      display: inline-block;
                      color: #000;
                      font-weight: bold;
                      background-color: #add8e6;
                  }
                  .mess-1-1{
                      padding: 8px;
                      border-radius: 8px
                  }
                  .mess-2-2{
                      padding: 8px;
                      border-radius: 8px
                  }
                 .mess-2{
                     display: inline-block;
                     word-wrap:break-word;
                     word-break:break-all;
                     color: #696969;
                     background-color:#fff;
                     padding: 8px;
                     border-radius: 8px
                 }
                 .tot{
                     display: inline-block;
                      40%;
                     word-wrap:break-word;
                     word-break:break-all;
                     color: #fff;
                     float: right;
                     margin-top: 3px;
                 }
                 .bottom-box{
                     position: fixed;
                     left: 0px;
                     bottom: 0px;
                     100%;
                     background-color: #191970;
                     padding-top: 10px
                  }
              }
        </style>
        
    </head>
    <body>
        <div class="container">
            <span id="is-open">服务器正在连接......</span>
            <span class="tot">当前共有<span id="total">0</span>个窗口在连接！</span>
            <p id="result"></p>
            
            <form>
                <div class = "bottom-box">
                    <p><span style="color: #fff">昵称：</span><input type="text" id="username"  class="form-control msl"/></p>
                    <p>
                        <input id="message" class="form-control ms">
                        <button id="btn" type="button" class="btn btn-primary">发送</button>
                    </p>
                </div>
            </form>

        </div>
        
<script>
    $(document).ready(function(){
        
        var timeOut;
        var arrResult = [];
        
        // 设置cookie函数
        function setCookie(cname,cvalue,exdays){
            var d = new Date();
            d.setTime(d.getTime()+(exdays*24*60*60*1000));
            var expires = "expires="+d.toGMTString();
            document.cookie = cname + "=" + cvalue + "; " + expires;
        }

        // 取出cookie数据函数
        function getCookie(cname){
            var name = cname + "=";
            var ca = document.cookie.split(';');
            for(var i=0; i<ca.length; i++) {
                var c = ca[i].trim();
                if (c.indexOf(name)==0) return c.substring(name.length,c.length);
            }
            return "";
        }
    
/* 刷新页面时从取出数据初始化页面 */
    
        // 初始化插入昵称
        var usrName = (getCookie("userName") != null)?getCookie("userName"):"";
        $("#username").val(usrName);
        
        setTimeout(function(){
            // 初始化滚动消息到最新
            $("#result").scrollTop(result.scrollHeight);
        },500);
    
        
        // 刷新页面时从redis数据库取出数据初始化页面
        $.post("./ajax.php",{},function(ajaxData){
            var m = JSON.parse(ajaxData);
            for(key in m){
                arrResult.push(m[key]);
            }
            $("#result").html(arrResult.join(''));
        });
        
/* 初始化数据结束 */
    
/* websocket通信 */
        var ws = new WebSocket("ws://47.94.224.241:9503");
    
        ws.onopen=function(){
            $("#is-open").html('服务器连接成功......');
            clearInterval(timeOut);
        }
    
        ws.onmessage=function(res){
            var data=JSON.parse(res.data);
            if(data.userId){
                window.userId = data.userId;
            }

            if(data.total){
                $("#total").html(data.total);
                return false;
            }
        
            if( data.cookieUsrName == getCookie("userName") ) {
                arrResult.push('<p class="mess"><span class="mess-1">' + data.message + '</span><span class="mess-1-1">我</span></p>');
            }else{
                arrResult.push('<p><span class="mess-2-2">' + data.username + '</span><span class="mess-2">' + data.message + '</span></p>');
            }

            // while()里的49要与ajax.php里的lpush方法里的参数49要统一
            while ( arrResult.length > 49) {
                arrResult.shift();
            }
            
            // 显示在界面上
            var val = arrResult.join("");
            $("#result").html(val);

            $("#result").scrollTop(result.scrollHeight);
        }

        ws.onclose=function(){
            $("#is-open").html('');
            $("#is-open").html('服务器已断开......');
            
            // 断开连接刷新页面
            timeOut = setInterval(function(){
                location.replace(location.href);
            }, 1000);
        }

        btn.onclick=function(){
            if($("#username").val() == '' || $("#message").val() == '') {
               
                // 打开模态框
                $('#myModal').modal('show');
            }else{
                
               /*
                 * 组装数据，数据是在js里组装的，swoole服务器只是转发了一下数据并存入redis数据库
                 *
                 * 判断“我”的方法：
                 * 1. 一种是判断fromuserid，可以判断到具体窗口，一个浏览器打开3个窗口就是3个不同的“我”；
                 * 2. 另一种是判断cookie或session里存储的用户名，即cookieUsrName键，一个浏览器认
                 *     为是一个用户，这里是用昵称代替了。
                 */
                var data={ fromuserid: window.userId, username: username.value, message: message.value, cookieUsrName: getCookie("userName") } ;
               
                //对象转JSON字符串发送到服务器
                ws.send( JSON.stringify(data) );
                message.value='';
           }
        }
    
        username.onkeyup = function() {
               //昵称存入cookie
               setCookie("userName", $("#username").val(), 7);
        }
    });
</script>

<!-- 模态框 -->
<div class="modal fade" id="myModal">
  <div class="modal-dialog">
    <div class="modal-content">
 
      <!-- 模态框头部 -->
      <div class="modal-header">
        <h4 class="modal-title">
            <i class="fa fa-exclamation-circle fa-lg" style="color: red"></i>
            错误提示：
        </h4>
        <button type="button" class="close" data-dismiss="modal">&times;</button>
      </div>
 
      <!-- 模态框主体 -->
      <div class="modal-body">
        “昵称”和“消息”内容都不允许为空，请重新输入！
      </div>
 
      <!-- 模态框底部 -->
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button>
      </div>
      
      </div>
  </div>
</div>

</body>
</html>

swooleServer.php

<?php
$ws = new swoole_websocket_server("0.0.0.0", 9503, SWOOLE_PROCESS);

$ws->set(array(
    'reactor_num' => 2, //reactor thread num
    'worker_num' => 4,    //worker process num
    'backlog' => 128,   //listen backlog
    'max_conn' => 10000, 
    'max_request' => 50,
    'dispatch_mode' => 1,
    'daemonize' => 1
));

$ws->on('open', function ($ws, $request) {
    
    $tot = count($ws->connections);
    $ws->push($request->fd, json_encode(['userId' => $request->fd, 'total' => $tot]));
    
});

$ws->on('message', function ($ws, $frame) {
    // 每个用户发送的消息向所有用户转发
    foreach($ws->connections as $value) {
        $ws->push($value, $frame->data);
    }

    // 向redis数据库写入数据，数据类型“列表”
    $redis = new Redis();
    $redis->connect('127.0.0.1', 6379);
    $redis->lpush("messages", $frame->data);
    
    // 超过100条数据开始删除旧数据
    while($redis->llen("messages") > 100) {
       $redis->rpop("messages");
    }
    
});

$ws->on('close', function ($ws, $fd) {
    
    $i = 0;
    foreach($ws->connections as $v) {
        if($v == $fd) {
            unset($ws->connections[$i]);
        }
        $i++;
    }
    
});

$ws->start();
?>

ajax.php

<?php
    $redis = new Redis();
    $redis->connect('127.0.0.1', 6379);
    $arrList = $redis->lrange("messages", 0, 20);
    $arrValue = [];
    while(count($arrList) > 0){
        $v = array_pop($arrList);
        $arrVal = json_decode($v, true);
        if($arrVal['cookieUsrName'] == $_COOKIE['userName']) {
            array_push($arrValue, '<p class="mess"><span class="mess-1">' . $arrVal['message'] . '</span><span class="mess-1-1">我</span></p>');
        }else{
            array_push($arrValue, '<p><span class="mess-2-2">' . $arrVal['username'] . '</span><span class="mess-2">' . $arrVal['message'] . '</span></p>');
        }
    }
    
    echo json_encode($arrValue);
?>

可以通过下面的页面查看redis数据库里的内容，不用去服务器端查看效果。

showRedis.php

<?php
    //连接本地的 Redis 服务
   $redis = new Redis();
   $redis->connect('127.0.0.1', 6379);
   
   // 获取存储的数据并输出
   $arList = $redis->lrange("messages", 0 ,100);
   
   echo '当前显示内容->' . json_decode($arList[0], true)["username"] . "：“" . json_decode($arList[0], true)["message"] . "”";
   echo "<pre>";
   print_r($arList);
   echo "</pre>";?>

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原文地址：https://www.cnblogs.com/qingsong/p/11442219.html