php+html5基于websocket实现聊天室的方法

<?phperror_reporting(E_ALL);ob_implicit_flush();$sk=new Sock('127.0.0.1',8000);$sk->run();class Sock{ public $sockets; public $users; public $master; public function __construct($address, $port){  $this->master=$this->WebSocket($address, $port);  $this->sockets=array('s'=>$this->master); } function run(){  while(true){   $changes=$this->sockets;   socket_select($changes,$write=NULL,$except=NULL,NULL);   foreach($changes as $sock){    if($sock==$this->master){     $client=socket_accept($this->master);     //$key=uniqid();     $this->sockets[]=$client;     $this->users[]=array(      'socket'=>$client,      'shou'=>false     );    }else{     $len=socket_recv($sock,$buffer,2048,0);     $k=$this->search($sock);     if($len<7){      $name=$this->users[$k]['ming'];      $this->close($sock);      $this->send2($name,$k);      continue;     }     if(!$this->users[$k]['shou']){      $this->woshou($k,$buffer);     }else{      $buffer = $this->uncode($buffer);      $this->send($k,$buffer);     }    }   }  } } function close($sock){  $k=array_search($sock, $this->sockets);  socket_close($sock);  unset($this->sockets[$k]);  unset($this->users[$k]);  $this->e("key:$k close"); } function search($sock){  foreach ($this->users as $k=>$v){   if($sock==$v['socket'])   return $k;  }  return false; } function WebSocket($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->e('Server Started : '.date('Y-m-d H:i:s'));  $this->e('Listening on : '.$address.' port '.$port);  return $server; } function woshou($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]['shou']=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 $msg;  } function send($k,$msg){  /*$this->send1($k,$this->code($msg),'all');*/  parse_str($msg,$g);  $this->e($msg);  $ar=array();  if($g['type']=='add'){   $this->users[$k]['ming']=$g['ming'];   $ar['add']=true;   $ar['nrong']='欢迎'.$g['ming'].'加入！';   $ar['users']=$this->getusers();   $key='all';  }else if($g['type']=='ltiao'){   $ar['nrong']=$g['nr'];   $key=$g['key'];  }  $msg=json_encode($ar);  $this->e($msg);  $msg = $this->code($msg);  $this->send1($k,$msg,$key);  //socket_write($this->users[$k]['socket'],$msg,strlen($msg)); } function getusers(){  $ar=array();  foreach($this->users as $k=>$v){   $ar[$k]=$v['ming'];  }  return $ar; } function send1($k,$str,$key='all'){  if($key=='all'){   foreach($this->users as $v){    socket_write($v['socket'],$str,strlen($str));   }  }else{   if($k!=$key)   socket_write($this->users[$k]['socket'],$str,strlen($str));   socket_write($this->users[$key]['socket'],$str,strlen($str));  } } function send2($ming,$k){  $ar['remove']=true;  $ar['removekey']=$k;  $ar['nrong']=$ming.'退出聊天室';  $str = $this->code(json_encode($ar));  $this->send1(false,$str,'all'); } function e($str){  $path=dirname(__FILE__).'/log.txt';  $str=$str."/n";  error_log($str,3,$path);  echo iconv('utf-8','gbk//IGNORE',$str); }}?>