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PHPでチャットルーム機能を実装する方法

藏色散人
藏色散人オリジナル
2021-07-22 09:54:584071ブラウズ

PHP でチャット ルーム関数を実装する方法: 最初にフロントエンド コードを作成し、次に「プライベート関数 initSocket(){...}」を作成して PHP バックエンド ファイルにチャット ルーム関数を実装します。 」などの方法があります。

PHPでチャットルーム機能を実装する方法

この記事の動作環境: Windows7 システム、PHP7.1 バージョン、DELL G3 コンピューター

php はどのように実装しますか?チャットルーム機能?

1. 関数インターフェイス

PHPでチャットルーム機能を実装する方法

PHPでチャットルーム機能を実装する方法

##2. 特定のコード実装

1.フロントエンド コードは次のとおりです

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>websocket聊天室</title>
    <link href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600" rel="stylesheet">
    <link rel="stylesheet" href="css/reset.min.css">
    <link rel="stylesheet" href="css/style.css">
    <style>
        .message img {
            float: left;
            width: 40px;
            height: 40px;
            margin-right: 12px;
            border-radius: 50%;
        }
        .you {
            margin-left: 60px;
            margin-top: -39px;
        }
        .me-header {
            float: right !important;
            margin-right: 0 !important;
        }
        .me {
            margin-right: 60px;
            margin-top: -39px;
        }
        .active-chat::-webkit-scrollbar, .left::-webkit-scrollbar {
            width: 2px;
        }
    </style>
</head>
<body>
<div>
    <div>
        <div>
            <div style="padding: 20px 29px;height: auto;">
                <div class="" style="font: 400 13.3333px Arial;font-weight: 400;">在线人数:<span id="numbers">0</span> 人
                </div>
            </div>
            <ul>
            </ul>
        </div>
        <div>
            <div><span>Tips: <span>PHP之websocket聊天室</span></span></div>
            <div class="chat active-chat" data-chat="person1"
                 style="height: auto;border-width: 0px;padding: 10px;height: 483px; padding: 10px;overflow-y: auto;scrollTop: 100px">
            </div>
            <div>
                <a href="javascript:;" class="write-link attach"></a>
                <input type="text" id="input-value" onkeydown="confirm(event)"/>
                <a href="javascript:;" class="write-link smiley"></a>
                <a href="javascript:;" class="write-link send" onclick="send()"></a>
            </div>
        </div>
    </div>
</div>
<script src="js/index.js"></script>
<script>
    var uname = prompt(&#39;请输入用户名&#39;, &#39;user&#39; + uuid(8, 16));
    var avatar = [&#39;bo-jackson.jpg&#39;, &#39;dog.png&#39;, &#39;drake.jpg&#39;, &#39;louis-ck.jpeg&#39;, &#39;michael-jordan.jpg&#39;, &#39;thomas.jpg&#39;];
    if (avatar[Math.round(Math.random() * 10)]) {
        var headerimg = "img/" + avatar[Math.round(Math.random() * 10)];
    } else {
        var headerimg = "img/" + avatar[0];
    }
    // 创建一个 websocket 连接
    var ws = new WebSocket("ws://127.0.0.1:1238");
    // websocket 创建成功事件
    ws.onopen = function () {
        var data = "系统消息:建立连接成功";
        console.log(data);
    };
    // websocket 接收到消息事件
    ws.onmessage = function (e) {
        var data = JSON.parse(e.data);
        switch (data.type) {
            case &#39;handShake&#39;:
                console.log(data.msg);
                //发送用户登录
                var user_info = {&#39;type&#39;: &#39;login&#39;, &#39;msg&#39;: uname, &#39;headerimg&#39;: headerimg};
                sendMsg(user_info);
                break;
            case &#39;login&#39;:
                userList(data.user_list);
                systemMessage(&#39;系统消息: &#39; + data.msg + &#39; 已上线&#39;);
                break;
            case &#39;logout&#39;:
                userList(data.user_list);
                if (data.msg.length > 0) {
                    systemMessage(&#39;系统消息: &#39; + data.msg + &#39; 已下线&#39;);
                }
                break;
            case &#39;user&#39;:
                messageList(data);
                break;
            case &#39;system&#39;:
                systemMessage();
                break;
        }
    }
    // websocket 错误事件
    ws.onerror = function () {
        var data = "系统消息 : 出错了,请退出重试.";
        alert(data);
    };
    function confirm(event) {
        var key_num = event.keyCode;
        if (13 == key_num) {
            send();
        } else {
            return false;
        }
    }
    function systemMessage(msg) {
        var html = `<div>
            <span>` + msg + `</span>
        </div>`;
        var active_chat = document.querySelector(&#39;div.active-chat&#39;);
        var oldHtml = active_chat.innerHTML;
        active_chat.innerHTML = oldHtml + html;
        active_chat.scrollTop = active_chat.scrollHeight;
    }
    function send() {
        var msg = document.querySelector("input#input-value").value;
        var reg = new RegExp("\r\n", "g");
        msg = msg.replace(reg, "");
        sendMsg({type: "user", msg: msg});
        document.querySelector("input#input-value").value = "";
    }
    function sendMsg(msg) {
        var data = JSON.stringify(msg);
        ws.send(data);
    }
    function userList(user) {
        var html = &#39;&#39;;
        for (var i = 0; i < user.length; i++) {
            html += `<li data-chat="person1">
                    <img src="` + user[i].headerimg + `" alt=""/>
                    <span>` + user[i].username + `</span>
                    <span>` + user[i].login_time + `</span>
                    <span style="color: green;font-size: 7px;">在线</span>
                </li>`;
        }
        document.querySelector(&#39;ul.people&#39;).innerHTML = html;
        document.querySelector(&#39;span#numbers&#39;).innerHTML = user.length;
    }
    function messageList(data) {
        if (data.from == uname) {
            var html = `<div>
                    <img src="` + data.headerimg + `" alt=""/>
                    <div class="bubble me">` + data.msg + `</div>
                </div>`;
        } else {
            var html = `<div>
                    <img src="` + data.headerimg + `" alt=""/>
                    <div class="bubble you">` + data.msg + `</div>
                </div>`;
        }
        var active_chat = document.querySelector(&#39;div.active-chat&#39;);
        var oldHtml = active_chat.innerHTML;
        active_chat.innerHTML = oldHtml + html;
        active_chat.scrollTop = active_chat.scrollHeight;
    }
    /**
     * 生产一个全局唯一ID作为用户名的默认值;
     *
     * @param len
     * @param radix
     * @returns {string}
     */
    function uuid(len, radix) {
        var chars = &#39;0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz&#39;.split(&#39;&#39;);
        var uuid = [], i;
        radix = radix || chars.length;
        if (len) {
            for (i = 0; i < len; i++) uuid[i] = chars[0 | Math.random() * radix];
        } else {
            var r;
            uuid[8] = uuid[13] = uuid[18] = uuid[23] = &#39;-&#39;;
            uuid[14] = &#39;4&#39;;
            for (i = 0; i < 36; i++) {
                if (!uuid[i]) {
                    r = 0 | Math.random() * 16;
                    uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r];
                }
            }
        }
        return uuid.join(&#39;&#39;);
    }
</script>
</body>
</html>

2. バックエンド コードは次のとおりです

<?php
/**
 * Created by PhpStorm.
 * User: 25754
 * Date: 2019/4/23
 * Time: 14:13
 */
class socketServer
{
    const LISTEN_SOCKET_NUM = 9;
    const LOG_PATH = "./log/";
    private $_ip = "127.0.0.1";
    private $_port = 1238;
    private $_socketPool = array();
    private $_master = null;
    public function __construct()
    {
        $this->initSocket();
    }
    private function initSocket()
    {
        try {
            //创建socket套接字
            $this->_master = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
            // 设置IP和端口重用,在重启服务器后能重新使用此端口;
            socket_set_option($this->_master, SOL_SOCKET, SO_REUSEADDR, 1);
            //绑定地址与端口
            socket_bind($this->_master, $this->_ip, $this->_port);
            //listen函数使用主动连接套接口变为被连接套接口,使得一个进程可以接受其它进程的请求,从而成为一个服务器进程。在TCP服务器编程中listen函数把进程变为一个服务器,并指定相应的套接字变为被动连接,其中的能存储的请求不明的socket数目。
            socket_listen($this->_master, self::LISTEN_SOCKET_NUM);
        } catch (Exception $e) {
            $this->debug(array("code: " . $e->getCode() . ", message: " . $e->getMessage()));
        }
        //将socket保存到socket池中
        $this->_socketPool[0] = array(&#39;resource&#39; => $this->_master);
        $pid = getmypid();
        $this->debug(array("server: {$this->_master} started,pid: {$pid}"));
        while (true) {
            try {
                $this->run();
            } catch (Exception $e) {
                $this->debug(array("code: " . $e->getCode() . ", message: " . $e->getMessage()));
            }
        }
    }
    private function run()
    {
        $write = $except = NULL;
        $sockets = array_column($this->_socketPool, &#39;resource&#39;);
        $read_num = socket_select($sockets, $write, $except, NULL);
        if (false === $read_num) {
            $this->debug(array(&#39;socket_select_error&#39;, $err_code = socket_last_error(), socket_strerror($err_code)));
            return;
        }
        foreach ($sockets as $socket) {
            if ($socket == $this->_master) {
                $client = socket_accept($this->_master);
                if ($client === false) {
                    $this->debug([&#39;socket_accept_error&#39;, $err_code = socket_last_error(), socket_strerror($err_code)]);
                    continue;
                }
                //连接
                $this->connection($client);
            } else {
                //接受数据
                $bytes = @socket_recv($socket, $buffer, 2048, 0);
                if ($bytes == 0) {
                    $recv_msg = $this->disconnection($socket);
                } else {
                    if ($this->_socketPool[(int)$socket][&#39;handShake&#39;] == false) {
                        $this->handShake($socket, $buffer);
                        continue;
                    } else {
                        $recv_msg = $this->parse($buffer);
                    }
                }
                $msg = $this->doEvents($socket, $recv_msg);
                echo($msg);
                socket_getpeername ( $socket  , $address ,$port );
                $this->debug(array(
                    &#39;send_success&#39;,
                    json_encode($recv_msg),
                    $address,
                    $port
                ));
                $this->broadcast($msg);
            }
        }
    }
    /**
     * 数据广播
     * @param $data
     */
    private function broadcast($data)
    {
        foreach ($this->_socketPool as $socket) {
            if ($socket[&#39;resource&#39;] == $this->_master) {
                continue;
            }
            socket_write($socket[&#39;resource&#39;], $data, strlen($data));
        }
    }
    /**
     * 业务处理
     * @param $socket
     * @param $recv_msg
     * @return string
     */
    private function doEvents($socket, $recv_msg)
    {
        $msg_type = $recv_msg[&#39;type&#39;];
        $msg_content = $recv_msg[&#39;msg&#39;];
        $response = [];
        switch ($msg_type) {
            case &#39;login&#39;:
                $this->_socketPool[(int)$socket][&#39;userInfo&#39;] = array("username" => $msg_content, &#39;headerimg&#39; => $recv_msg[&#39;headerimg&#39;], "login_time" => date("h:i"));
                // 取得最新的名字记录
                $user_list = array_column($this->_socketPool, &#39;userInfo&#39;);
                $response[&#39;type&#39;] = &#39;login&#39;;
                $response[&#39;msg&#39;] = $msg_content;
                $response[&#39;user_list&#39;] = $user_list;
                break;
            case &#39;logout&#39;:
                $user_list = array_column($this->_socketPool, &#39;userInfo&#39;);
                $response[&#39;type&#39;] = &#39;logout&#39;;
                $response[&#39;user_list&#39;] = $user_list;
                if ($nowUserSocket = @$this->_socketPool[(int)$socket]) {
                    $response[&#39;msg&#39;] = $nowUserSocket[&#39;userInfo&#39;][&#39;username&#39;];
                }else{
                    $response[&#39;msg&#39;] = &#39;&#39;;
                }
                break;
            case &#39;user&#39;:
                $userInfo = $this->_socketPool[(int)$socket][&#39;userInfo&#39;];
                $response[&#39;type&#39;] = &#39;user&#39;;
                $response[&#39;from&#39;] = $userInfo[&#39;username&#39;];
                $response[&#39;msg&#39;] = $msg_content;
                $response[&#39;headerimg&#39;] = $userInfo[&#39;headerimg&#39;];
                break;
        }
        return $this->frame(json_encode($response));
    }
    /**
     * socket握手
     * @param $socket
     * @param $buffer
     * @return bool
     */
    public function handShake($socket, $buffer)
    {
        $acceptKey = $this->encry($buffer);
        $upgrade = "HTTP/1.1 101 Switching Protocols\r\n" .
            "Upgrade: websocket\r\n" .
            "Connection: Upgrade\r\n" .
            "Sec-WebSocket-Accept: " . $acceptKey . "\r\n\r\n";
        // 写入socket
        socket_write($socket, $upgrade, strlen($upgrade));
        // 标记握手已经成功,下次接受数据采用数据帧格式
        $this->_socketPool[(int)$socket][&#39;handShake&#39;] = true;
        socket_getpeername ( $socket  , $address ,$port );
        $this->debug(array(
            &#39;hand_shake_success&#39;,
            $socket,
            $address,
            $port
        ));
        //发送消息通知客户端握手成功
        $msg = array(&#39;type&#39; => &#39;handShake&#39;, &#39;msg&#39; => &#39;握手成功&#39;);
        $msg = $this->frame(json_encode($msg));
        socket_write($socket, $msg, strlen($msg));
        return true;
    }
    /**
     * 帧数据封装
     * @param $msg
     * @return string
     */
    private function frame($msg)
    {
        $frame = [];
        $frame[0] = &#39;81&#39;;
        $len = strlen($msg);
        if ($len < 126) {
            $frame[1] = $len < 16 ? &#39;0&#39; . dechex($len) : dechex($len);
        } else if ($len < 65025) {
            $s = dechex($len);
            $frame[1] = &#39;7e&#39; . str_repeat(&#39;0&#39;, 4 - strlen($s)) . $s;
        } else {
            $s = dechex($len);
            $frame[1] = &#39;7f&#39; . str_repeat(&#39;0&#39;, 16 - strlen($s)) . $s;
        }
        $data = &#39;&#39;;
        $l = strlen($msg);
        for ($i = 0; $i < $l; $i++) {
            $data .= dechex(ord($msg{$i}));
        }
        $frame[2] = $data;
        $data = implode(&#39;&#39;, $frame);
        return pack("H*", $data);
    }
    /**
     * 接受数据解析
     * @param $buffer
     * @return mixed
     */
    private function parse($buffer)
    {
        $decoded = &#39;&#39;;
        $len = ord($buffer[1]) & 127;
        if ($len === 126) {
            $masks = substr($buffer, 4, 4);
            $data = substr($buffer, 8);
        } else if ($len === 127) {
            $masks = substr($buffer, 10, 4);
            $data = substr($buffer, 14);
        } else {
            $masks = substr($buffer, 2, 4);
            $data = substr($buffer, 6);
        }
        for ($index = 0; $index < strlen($data); $index++) {
            $decoded .= $data[$index] ^ $masks[$index % 4];
        }
        return json_decode($decoded, true);
    }
    // 提取 Sec-WebSocket-Key 信息
    private function getKey($req)
    {
        $key = null;
        if (preg_match("/Sec-WebSocket-Key: (.*)\r\n/", $req, $match)) {
            $key = $match[1];
        }
        return $key;
    }
    //加密 Sec-WebSocket-Key
    private function encry($req)
    {
        $key = $this->getKey($req);
        return base64_encode(sha1($key . &#39;258EAFA5-E914-47DA-95CA-C5AB0DC85B11&#39;, true));
    }
    /**
     * 连接socket
     * @param $client
     */
    public function connection($client)
    {
        socket_getpeername ( $client  , $address ,$port );
        $info = array(
            &#39;resource&#39; => $client,
            &#39;userInfo&#39; => &#39;&#39;,
            &#39;handShake&#39; => false,
            &#39;ip&#39; => $address,
            &#39;port&#39; => $port,
        );
        $this->_socketPool[(int)$client] = $info;
        $this->debug(array_merge([&#39;socket_connect&#39;], $info));
    }
    /**
     * 断开连接
     * @param $socket
     * @return array
     */
    public function disconnection($socket)
    {
        $recv_msg = array(
            &#39;type&#39; => &#39;logout&#39;,
            &#39;msg&#39; => @$this->_socketPool[(int)$socket][&#39;username&#39;],
        );
        unset($this->_socketPool[(int)$socket]);
        return $recv_msg;
    }
    /**
     * 日志
     * @param array $info
     */
    private function debug(array $info)
    {
        $time = date(&#39;Y-m-d H:i:s&#39;);
        array_unshift($info, $time);
        $info = array_map(&#39;json_encode&#39;, $info);
        file_put_contents(self::LOG_PATH . &#39;websocket_debug.log&#39;, implode(&#39; | &#39;, $info) . "\r\n", FILE_APPEND);
    }
}
new socketServer();

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