PHP实现websocket通信的方法示例

程序员文章站 2023-09-04 11:52:46

本文实例讲述了php实现websocket通信的方法。分享给大家供大家参考，具体如下：执行方法: 首先先修改server.php与index.html的ip 通过命...

本文实例讲述了php实现websocket通信的方法。分享给大家供大家参考，具体如下：

执行方法:

首先先修改server.php与index.html的ip
通过命令行执行 [php路径]\php.exe "[文件路径]\server.php"
然后通过浏览器打开index.html

server.php

<?php
include 'websocket.class.php';
$config=array(
 'address'=>'192.168.0.200',
 'port'=>'8000',
 'event'=>'wsevent',//回调函数的函数名
 'log'=>true,
);
$websocket = new websocket($config);
$websocket->run();
function wsevent($type,$event){
 global $websocket;
  if('in'==$type){
   $websocket->log('客户进入id:'.$event['k']);
  }elseif('out'==$type){
   $websocket->log('客户退出id:'.$event['k']);
  }elseif('msg'==$type){
   $websocket->log($event['k'].'消息:'.$event['msg']);
   roboot($event['sign'],$event['msg']);
  }
}
function roboot($sign,$t){
 global $websocket;
 switch ($t)
 {
 case 'hello':
  $show='hello,git @ osc';
  break;
 case 'name':
  $show='robot';
  break;
 case 'time':
  $show='当前时间:'.date('y-m-d h:i:s');
  break;
 case '再见':
  $show='( ^_^ )/~~拜拜';
  $websocket->write($sign,'robot:'.$show);
  $websocket->close($sign);
  return;
  break;
 case '天王盖地虎':
  $array = array('小鸡炖蘑菇','宝塔震河妖','粒粒皆辛苦');
  $show = $array[rand(0,2)];
  break;
 default:
  $show='( ⊙o⊙?)不懂,你可以尝试说:hello,name,time,再见,天王盖地虎.';
 }
 $websocket->write($sign,'robot:'.$show);
}
?>

index.html

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>websocket_test</title>
</head>
<body>
<textarea class="log" style="width: 100%; height: 500px;">
=======websocket======
</textarea>
<input type="button" value="连接" onclick="link()">
<input type="button" value="断开" onclick="dis()">
<input type="text" id="text">
<input type="button" value="发送" onclick="send()">
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script>
function link(){
 var url='ws://192.168.0.200:8000';
 socket=new websocket(url);
 socket.onopen=function(){log('连接成功')}
 socket.onmessage=function(msg){log('获得消息:'+msg.data);console.log(msg);}
 socket.onclose=function(){log('断开连接')}
}
function dis(){
 socket.close();
 socket=null;
}
function log(var1){
 $('.log').append(var1+"\r\n");
}
function send(){
 socket.send($('#text').attr('value'));
}
function send2(){
 var json = json.stringify({'type':'php','msg':$('#text2').attr('value')})
 socket.send(json);
}
</script>
</body>
</html>

websocket.class.php

<?php
/*
创建类websocket($config);
$config结构:
$config=array(
 'address'=>'192.168.0.200',//绑定地址
 'port'=>'8000',//绑定端口
 'event'=>'wsevent',//回调函数的函数名
 'log'=>true,//命令行显示记录
);
回调函数返回数据格式
function wsevent($type,$event)
$type字符串 事件类型有以下三种
in 客户端进入
out 客户端断开
msg 客户端消息到达
均为小写
$event 数组
$event['k']内置用户列表的userid;
$event['sign']客户标示
$event['msg']收到的消息 $type='msg'时才有该信息
方法:
run()运行
search(标示)遍历取得该标示的id
close(标示)断开连接
write(标示,信息)推送信息
idwrite(id,信息)推送信息
属性:
$users 客户列表
结构:
$users=array(
[用户id]=>array('socket'=>[标示],'hand'=[是否握手-布尔值]),
[用户id]=>arr.....
)
*/
class websocket{
  public $log;
  public $event;
  public $signets;
  public $users;
  public $master;
  public function __construct($config){
    if (substr(php_sapi_name(), 0, 3) !== 'cli') {
      die("请通过命令行模式运行!");
    }
    error_reporting(e_all);
    set_time_limit(0);
    ob_implicit_flush();
    $this->event = $config['event'];
    $this->log = $config['log'];
    $this->master=$this->websocket($config['address'], $config['port']);
    $this->sockets=array('s'=>$this->master);
  }
  function websocket($address,$port){
    $server = socket_create(af_inet, sock_stream, sol_tcp);
    socket_set_option($server, sol_socket, so_reuseaddr, 1);
    socket_bind($server, $address, $port);
    socket_listen($server);
    $this->log('开始监听: '.$address.' : '.$port);
    return $server;
  }
 function run(){
  while(true){
   $changes=$this->sockets;
   @socket_select($changes,$write=null,$except=null,null);
   foreach($changes as $sign){
    if($sign==$this->master){
     $client=socket_accept($this->master);
     $this->sockets[]=$client;
     $user = array(
      'socket'=>$client,
      'hand'=>false,
     );
     $this->users[] = $user;
     $k=$this->search($client);
     $eventreturn = array('k'=>$k,'sign'=>$sign);
     $this->eventoutput('in',$eventreturn);
    }else{
     $len=socket_recv($sign,$buffer,2048,0);
     $k=$this->search($sign);
     $user=$this->users[$k];
     if($len<7){
      $this->close($sign);
      $eventreturn = array('k'=>$k,'sign'=>$sign);
      $this->eventoutput('out',$eventreturn);
      continue;
     }
     if(!$this->users[$k]['hand']){//没有握手进行握手
      $this->handshake($k,$buffer);
     }else{
      $buffer = $this->uncode($buffer);
      $eventreturn = array('k'=>$k,'sign'=>$sign,'msg'=>$buffer);
      $this->eventoutput('msg',$eventreturn);
     }
    }
   }
  }
 }
 function search($sign){//通过标示遍历获取id
  foreach ($this->users as $k=>$v){
   if($sign==$v['socket'])
   return $k;
  }
  return false;
 }
 function close($sign){//通过标示断开连接
  $k=array_search($sign, $this->sockets);
  socket_close($sign);
  unset($this->sockets[$k]);
  unset($this->users[$k]);
 }
 function handshake($k,$buffer){
  $buf = substr($buffer,strpos($buffer,'sec-websocket-key:')+18);
  $key = trim(substr($buf,0,strpos($buf,"\r\n")));
  $new_key = base64_encode(sha1($key."258eafa5-e914-47da-95ca-c5ab0dc85b11",true));
  $new_message = "http/1.1 101 switching protocols\r\n";
  $new_message .= "upgrade: websocket\r\n";
  $new_message .= "sec-websocket-version: 13\r\n";
  $new_message .= "connection: upgrade\r\n";
  $new_message .= "sec-websocket-accept: " . $new_key . "\r\n\r\n";
  socket_write($this->users[$k]['socket'],$new_message,strlen($new_message));
  $this->users[$k]['hand']=true;
  return true;
 }
 function uncode($str){
  $mask = array();
  $data = '';
  $msg = unpack('h*',$str);
  $head = substr($msg[1],0,2);
  if (hexdec($head{1}) === 8) {
   $data = false;
  }else if (hexdec($head{1}) === 1){
   $mask[] = hexdec(substr($msg[1],4,2));
   $mask[] = hexdec(substr($msg[1],6,2));
   $mask[] = hexdec(substr($msg[1],8,2));
   $mask[] = hexdec(substr($msg[1],10,2));
   $s = 12;
   $e = strlen($msg[1])-2;
   $n = 0;
   for ($i=$s; $i<= $e; $i+= 2) {
    $data .= chr($mask[$n%4]^hexdec(substr($msg[1],$i,2)));
    $n++;
   }
  }
  return $data;
 }
  function code($msg){
   $msg = preg_replace(array('/\r$/','/\n$/','/\r\n$/',), '', $msg);
   $frame = array();
   $frame[0] = '81';
   $len = strlen($msg);
   $frame[1] = $len<16?'0'.dechex($len):dechex($len);
   $frame[2] = $this->ord_hex($msg);
   $data = implode('',$frame);
   return pack("h*", $data);
  }
  function ord_hex($data) {
   $msg = '';
   $l = strlen($data);
   for ($i= 0; $i<$l; $i++) {
    $msg .= dechex(ord($data{$i}));
   }
   return $msg;
  }
  function idwrite($id,$t){//通过id推送信息
   if(!$this->users[$id]['socket']){return false;}//没有这个标示
   $t=$this->code($t);
   return socket_write($this->users[$id]['socket'],$t,strlen($t));
  }
  function write($k,$t){//通过标示推送信息
   $t=$this->code($t);
   return socket_write($k,$t,strlen($t));
  }
  function eventoutput($type,$event){//事件回调
   call_user_func($this->event,$type,$event);
  }
  function log($t){//控制台输出
   if($this->log){
    $t=$t."\r\n";
    fwrite(stdout, iconv('utf-8','gbk//ignore',$t));
   }
  }
}

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