PHP用swoole+websocket和redis实现web一对一聊天
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2020-10-16
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PHP用用swoole+websocket和和redis实现实现web一对一聊天一对一聊天
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}";//$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";
});
$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%;}
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