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這篇文章給大家分享的是有關(guān)php+websocket如何實(shí)現(xiàn)的聊天室功能的內(nèi)容。小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,一起跟隨小編過來看看吧。
一、配置
開啟socket組建,否則會(huì)報(bào) Fatal error: Call to undefined function socket_create() 錯(cuò)誤
1、打開php.ini配置文件,搜索 extension=php_sockets.dll,把前面的‘;'分號(hào)刪掉。修改之后重啟服務(wù)。
注意:如果php版本多,一定要注意使用的哪個(gè)版本就要取修改哪個(gè)版本的php.ini文件,wamp開啟socket需要apache和php下面的php.ini一起修改,而phpstudy只需要修改一個(gè)php.ini.
2、檢查socket組建是否開啟
運(yùn)行phpinfo.php查看,如果Sockets Support => enabled,就說明開啟成功了。
3、設(shè)置cmd可以運(yùn)行php文件
在“我的計(jì)算機(jī)->屬性->高級(jí)系統(tǒng)設(shè)置->高級(jí)->環(huán)境變量”,在用戶變量的PATH添加一條,指向php的路徑(注意版本要一致),在環(huán)境變量里的Path也需要添加一條,跟上面一樣
4、測試socket和php是否配置成功
在項(xiàng)目下新建一個(gè)名叫start.php的文件
if(extension_loaded('sockets')){ echo "1"; }else{ echo "0"; }
在cmd里輸入 php d:\phpstudy\www\start.php,如果輸出1,則說明配置正確,如果輸出0,則配置錯(cuò)誤,需要仔細(xì)重新配置
二、實(shí)現(xiàn)流程
前端實(shí)現(xiàn)比較簡單,難點(diǎn)在后臺(tái),其邏輯如下:php主要就是接收加密key并返回其中完成套接字的創(chuàng)建和握手操作
服務(wù)端的流程:
1、掛起一個(gè)socket套接字進(jìn)程,等待連接
2、有socket連接之后,遍歷套接字?jǐn)?shù)組
3、沒有握手的,進(jìn)行握手操作,已經(jīng)握手的,則把接收的數(shù)據(jù)解析并寫入緩沖區(qū)進(jìn)行輸出。
三、前端代碼
<!DOCTYPE html> <html lang="en"> <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="external nofollow" rel="stylesheet"> <link rel="stylesheet" href="/static/index/css/reset.min.css" rel="external nofollow" > <link rel="stylesheet" href="/static/index/css/chat.css" rel="external nofollow" > <link rel="stylesheet" href="/static/index/layui/layer/theme/default/layer.css" rel="external nofollow" > <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 class="wrapper"> <div class="container"> <div class="left"> <div class="top" > <div class="" >在線人數(shù):<span id="numbers">0</span> 人 </div> </div> <ul class="people"> </ul> </div> <div class="right"> <div class="top"><span>Tips: <span class="name">PHP之websocket聊天室</span></span></div> <div class="chat active-chat" data-chat="person1" > </div> <div class="write"> <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="write-link attach"></a> <input type="text" id="input-value" onkeydown="confirm(event)"/> <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="write-link smiley"></a> <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="write-link send" onclick="send()"></a> </div> </div> </div> </div> <script src="/static/index/js/jquery-1.11.3.min.js"></script> <script src="/static/index/js/chat.js"></script> <script src="/static/index/layui/layer/layer.js"></script> <script> var uname = "user" + uuid(8, 11); layer.open({ title: '您的用戶名如下', content: uname, closeBtn: 0, yes: function (index, layero) { layer.close(index); } }); // 隨機(jī)選出一個(gè)頭像 var avatar = ['a1.jpg', 'a2.jpg', 'a3.jpg', 'a4.jpg', 'a5.jpg', 'a6.jpg', 'a7.jpg', 'a8.jpg', 'a9.jpg', 'a10.jpg']; if (avatar[Math.round(Math.random() * 10)]) { var headerimg = "img/" + avatar[Math.round(Math.random() * 10)]; } else { var headerimg = "img/" + avatar[0]; } var ws = null; // 創(chuàng)建websocket連接 connect(); function connect() { // 創(chuàng)建一個(gè) websocket 連接 ws://ip:端口號(hào) ws = new WebSocket("ws://127.0.0.1:1234"); // 連接狀態(tài) 1已建立連接 console.log(ws.readyState) // 連接建立時(shí)觸發(fā) ws.onopen = onopen; // 客戶端接收服務(wù)端數(shù)據(jù)時(shí)觸發(fā) ws.onmessage = onmessage; // 連接關(guān)閉時(shí)觸發(fā) ws.onclose = onclose; // 通信發(fā)生錯(cuò)誤時(shí)觸發(fā) ws.onerror = onerror; } // 通信建立成功 function onopen() { var data = "系統(tǒng)消息:建立連接成功"; console.log(data); } // 接收客戶端的數(shù)據(jù),發(fā)送數(shù)據(jù) function onmessage(e) { var data = JSON.parse(e.data); console.log(data) switch (data.type) { case 'handShake': //首次登錄,發(fā)送登陸數(shù)據(jù) var user_info = {'type': 'login', 'msg': uname, 'headerimg': headerimg}; sendMsg(user_info); break; case 'login': userList(data.user_list); systemMessage('系統(tǒng)消息: ' + data.msg + ' 已上線'); break; case 'logout': userList(data.user_list); if (data.msg.length > 0) { systemMessage('系統(tǒng)消息: ' + data.msg + ' 已下線'); } break; case 'user': messageList(data); break; case 'system': systemMessage(); break; } } function onclose() { console.log("連接關(guān)閉,定時(shí)重連"); connect(); } // websocket 錯(cuò)誤事件 function onerror() { var data = "系統(tǒng)消息 : 出錯(cuò)了,請(qǐng)退出重試."; console.log(data); } function confirm(event) { var key_num = event.keyCode; if (13 == key_num) { send(); } else { return false; } } // 發(fā)送數(shù)據(jù) 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 = ""; } // 發(fā)送數(shù)據(jù) function sendMsg(msg) { var data = JSON.stringify(msg); ws.send(data); } // 追加數(shù)據(jù) 上下線的系統(tǒng)消息 function systemMessage(msg) { var html = `<div class="conversation-start"> <span>` + msg + `</span> </div>`; var active_chat = document.querySelector('div.active-chat'); var oldHtml = active_chat.innerHTML; active_chat.innerHTML = oldHtml + html; active_chat.scrollTop = active_chat.scrollHeight; } // 追加從服務(wù)端返回的數(shù)據(jù) 左側(cè)在線人數(shù)列表 function userList(user) { var html = ''; for (var i = 0; i < user.length; i++) { html += `<li class="person" data-chat="person1"> <img src="` + user[i].headerimg + `" alt=""/> <span class="name">` + user[i].username + `</span> <span class="time">` + user[i].login_time + `</span> <span class="preview" >在線</span> </li>`; } document.querySelector('ul.people').innerHTML = html; document.querySelector('span#numbers').innerHTML = user.length; } // 右側(cè)聊天記錄列表 function messageList(data) { // 判讀是不是自己發(fā)送的消息,對(duì)應(yīng)的樣式不同 if (data.from == uname) { // 如果當(dāng)前用戶名和feom的用戶名相同,就說明時(shí)自己發(fā)送的消息 var html = `<div class="message"> <img class="me-header" src="` + data.headerimg + `" alt=""/> <div class="bubble me">` + data.msg + `</div> </div>`; } else { // 別人發(fā)送的信息列表 var html = `<div class="message"> <img src="` + data.headerimg + `" alt=""/> <div class="bubble you">` + data.msg + `</div> </div>`; } var active_chat = document.querySelector('div.active-chat'); var oldHtml = active_chat.innerHTML; active_chat.innerHTML = oldHtml + html; active_chat.scrollTop = active_chat.scrollHeight; } /** * 生產(chǎn)一個(gè)全局唯一ID作為用戶名的默認(rèn)值; * * @param len * @param radix * @returns {string} */ function uuid(len, radix) { var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split(''); 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] = '-'; uuid[14] = '4'; 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(''); } </script> </body> </html>
四、后端代碼
<?php /** * Created by PhpStorm. * User: 25754 * Date: 2019/4/23 * Time: 14:13 */ class socketServer { const LISTEN_SOCKET_NUM = 9; const LOG_PATH = "./log/"; //日志 private $_ip = "127.0.0.1"; //ip private $_port = 1234; //端口 要和前端創(chuàng)建WebSocket連接時(shí)的端口號(hào)一致 private $_socketPool = array(); //socket池,即存放套接字的數(shù)組 private $_master = null; //創(chuàng)建的套接字對(duì)象 public function __construct() { $this->initSocket(); } // 創(chuàng)建WebSocket連接 private function initSocket() { try { //創(chuàng)建socket套接字 $this->_master = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); // 設(shè)置IP和端口重用,在重啟服務(wù)器后能重新使用此端口; socket_set_option($this->_master, SOL_SOCKET, SO_REUSEADDR, 1); //綁定地址與端口 socket_bind($this->_master, $this->_ip, $this->_port); //listen函數(shù)使用主動(dòng)連接套接口變?yōu)楸贿B接套接口,使得一個(gè)進(jìn)程可以接受其它進(jìn)程的請(qǐng)求,從而成為一個(gè)服務(wù)器進(jìn)程。在TCP服務(wù)器編程中l(wèi)isten函數(shù)把進(jìn)程變?yōu)橐粋€(gè)服務(wù)器,并指定相應(yīng)的套接字變?yōu)楸粍?dòng)連接,其中的能存儲(chǔ)的請(qǐng)求不明的socket數(shù)目。 socket_listen($this->_master, self::LISTEN_SOCKET_NUM); } catch (Exception $e) { $this->debug(array("code: " . $e->getCode() . ", message: " . $e->getMessage())); } //將socket保存到socket池中 (將套接字放入數(shù)組)默認(rèn)把當(dāng)前用戶放在第一個(gè) $this->_socketPool[0] = array('resource' => $this->_master); $pid = getmypid(); $this->debug(array("server: {$this->_master} started,pid: {$pid}")); } // 掛起進(jìn)程遍歷套接字?jǐn)?shù)組,對(duì)數(shù)據(jù)進(jìn)行接收、處理、發(fā)送 public function run() { // 死循環(huán) 直到socket斷開 while (true) { try { $write = $except = NULL; // 從數(shù)組中取出resource列 $sockets = array_column($this->_socketPool, 'resource'); /* $sockets 是一個(gè)存放文件描述符的數(shù)組。 $write 是監(jiān)聽是否客戶端寫數(shù)據(jù),傳入NULL是不關(guān)心是否有寫變化 $except 是$sockets里面要派粗話的元素,傳入null是監(jiān)聽全部 最后一個(gè)參數(shù)是超時(shí)時(shí)間,0立即結(jié)束 n>1則最多n秒后結(jié)束,如遇某一個(gè)連接有新動(dòng)態(tài),則提前返回 null如遇某一個(gè)連接有新動(dòng)態(tài),則返回 */ // 接收套接字?jǐn)?shù)字,監(jiān)聽他們的狀態(tài)就是有新消息到或有客戶端連接/斷開時(shí),socket_select函數(shù)才會(huì)返回,繼續(xù)往下執(zhí)行 $read_num = socket_select($sockets, $write, $except, NULL); if (false === $read_num) { $this->debug(array('socket_select_error', $err_code = socket_last_error(), socket_strerror($err_code))); return; } // 遍歷套接字?jǐn)?shù)組 foreach ($sockets as $socket) { // 如果有新的連接進(jìn)來 if ($socket == $this->_master) { // 接收一個(gè)socket連接 $client = socket_accept($this->_master); if ($client === false) { $this->debug(['socket_accept_error', $err_code = socket_last_error(), socket_strerror($err_code)]); continue; } //連接 并放到socket池中 $this->connection($client); } else { //接收已連接的socket數(shù)據(jù),返回的是從socket中接收的字節(jié)數(shù)。 // 第一個(gè)參數(shù):socket資源,第二個(gè)參數(shù):存儲(chǔ)接收的數(shù)據(jù)的變量,第三個(gè)參數(shù):接收數(shù)據(jù)的長度 $bytes = @socket_recv($socket, $buffer, 2048, 0); // 如果接收的字節(jié)數(shù)為0 if ($bytes == 0) { // 斷開連接 $recv_msg = $this->disconnection($socket); } else { // 判斷有沒有握手,沒有握手進(jìn)行握手,已經(jīng)握手則進(jìn)行處理 if ($this->_socketPool[(int)$socket]['handShake'] == false) { // 握手 $this->handShake($socket, $buffer); continue; } else { // 解析客戶端傳來的數(shù)據(jù) $recv_msg = $this->parse($buffer); } } // echo "<pre>"; // 業(yè)務(wù)處理,組裝返回客戶端的數(shù)據(jù)格式 $msg = $this->doEvents($socket, $recv_msg); // print_r($msg); socket_getpeername ( $socket , $address ,$port ); $this->debug(array( 'send_success', json_encode($recv_msg), $address, $port )); // 把服務(wù)端返回的數(shù)據(jù)寫入套接字 $this->broadcast($msg); } } } catch (Exception $e) { $this->debug(array("code: " . $e->getCode() . ", message: " . $e->getMessage())); } } } /** * 數(shù)據(jù)廣播 * @param $data */ private function broadcast($data) { foreach ($this->_socketPool as $socket) { if ($socket['resource'] == $this->_master) { continue; } // 寫入套接字 socket_write($socket['resource'], $data, strlen($data)); } } /** * 業(yè)務(wù)處理,在這可以對(duì)數(shù)據(jù)庫進(jìn)行操作,并返回客戶端數(shù)據(jù);根據(jù)不同類型,組裝不同格式的數(shù)據(jù) * @param $socket * @param $recv_msg 客戶端傳來的數(shù)據(jù) * @return string */ private function doEvents($socket, $recv_msg) { $msg_type = $recv_msg['type']; $msg_content = $recv_msg['msg']; $response = []; //echo "<pre>"; switch ($msg_type) { case 'login': // 登陸上線信息 $this->_socketPool[(int)$socket]['userInfo'] = array("username" => $msg_content, 'headerimg' => $recv_msg['headerimg'], "login_time" => date("h:i")); // 取得最新的名字記錄 $user_list = array_column($this->_socketPool, 'userInfo'); $response['type'] = 'login'; $response['msg'] = $msg_content; $response['user_list'] = $user_list; //print_r($response); break; case 'logout': // 退出信息 $user_list = array_column($this->_socketPool, 'userInfo'); $response['type'] = 'logout'; $response['user_list'] = $user_list; $response['msg'] = $msg_content; //print_r($response); break; case 'user': // 發(fā)送的消息 $userInfo = $this->_socketPool[(int)$socket]['userInfo']; $response['type'] = 'user'; $response['from'] = $userInfo['username']; $response['msg'] = $msg_content; $response['headerimg'] = $userInfo['headerimg']; //print_r($response); break; } return $this->frame(json_encode($response)); } /** * socket握手 * @param $socket * @param $buffer 客戶端接收的數(shù)據(jù) * @return bool */ public function handShake($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: " . $acceptKey . "\r\n\r\n"; // 將socket寫入緩沖區(qū) socket_write($socket, $upgrade, strlen($upgrade)); // 標(biāo)記握手已經(jīng)成功,下次接受數(shù)據(jù)采用數(shù)據(jù)幀格式 $this->_socketPool[(int)$socket]['handShake'] = true; socket_getpeername ( $socket , $address ,$port ); $this->debug(array( 'hand_shake_success', $socket, $address, $port )); //發(fā)送消息通知客戶端握手成功 $msg = array('type' => 'handShake', 'msg' => '握手成功'); $msg = $this->frame(json_encode($msg)); socket_write($socket, $msg, strlen($msg)); return true; } /** * 幀數(shù)據(jù)封裝 * @param $msg * @return string */ private function frame($msg) { $frame = []; $frame[0] = '81'; $len = strlen($msg); if ($len < 126) { $frame[1] = $len < 16 ? '0' . dechex($len) : dechex($len); } else if ($len < 65025) { $s = dechex($len); $frame[1] = '7e' . str_repeat('0', 4 - strlen($s)) . $s; } else { $s = dechex($len); $frame[1] = '7f' . str_repeat('0', 16 - strlen($s)) . $s; } $data = ''; $l = strlen($msg); for ($i = 0; $i < $l; $i++) { $data .= dechex(ord($msg{$i})); } $frame[2] = $data; $data = implode('', $frame); return pack("H*", $data); } /** * 解析客戶端的數(shù)據(jù) * @param $buffer * @return mixed */ private function parse($buffer) { $decoded = ''; $len = ord($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($decoded, true); } //提取 Sec-WebSocket-Key 信息并加密 private function encry($req) { $key = null; if (preg_match("/Sec-WebSocket-Key: (.*)\r\n/", $req, $match)) { $key = $match[1]; } // 加密 return base64_encode(sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true)); } /** * 連接socket * @param $client */ public function connection($client) { socket_getpeername ( $client , $address ,$port ); $info = array( 'resource' => $client, 'userInfo' => '', 'handShake' => false, 'ip' => $address, 'port' => $port, ); $this->_socketPool[(int)$client] = $info; $this->debug(array_merge(['socket_connect'], $info)); } /** * 斷開連接 * @param $socket * @return array */ public function disconnection($socket) { $recv_msg = array( 'type' => 'logout', 'msg' => @$this->_socketPool[(int)$socket]['userInfo']['username'], ); unset($this->_socketPool[(int)$socket]); return $recv_msg; } /** * 日志 * @param array $info */ private function debug(array $info) { $time = date('Y-m-d H:i:s'); array_unshift($info, $time); $info = array_map('json_encode', $info); file_put_contents(self::LOG_PATH . 'websocket_debug.log', implode(' | ', $info) . "\r\n", FILE_APPEND); } } // 類外實(shí)例化 $sk = new socketServer(); // 運(yùn)行 $sk -> run();
五、運(yùn)行php
建立start.bat文件,運(yùn)行php,也可以在cmd里輸入命令運(yùn)行php
php ./socketServer.php pause
運(yùn)行結(jié)果如下:
注意:start.bat要一直運(yùn)行,如果關(guān)了,就表示socket也關(guān)了,就不能通信了,所有需要start.bat一直運(yùn)行。
感謝各位的閱讀!關(guān)于“php+websocket如何實(shí)現(xiàn)的聊天室功能”這篇文章就分享到這里了,希望以上內(nèi)容可以對(duì)大家有一定的幫助,讓大家可以學(xué)到更多知識(shí),如果覺得文章不錯(cuò),可以把它分享出去讓更多的人看到吧!
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