php+webSoket实现聊天室示例代码（附源码）

private $sda=array();//已接收的数据
private $slen=array();//数据总长度
private $sjen=array();//接收数据的长度
private $ar=array();//加密key
private $n=array();

public function __construct($address,$port){
$this->master=$this->WebSocket($address,$port);
$this->sockets=array($this->master);
}

function run(){
while(true){
$changes=$this->sockets;
$write=NULL;
$except=NULL;
socket_select($changes,$write,$except,NULL);
foreach($changes as $sock){
if($sock==$this->master){
$client=socket_accept($this->master);
$key=uniqid();
$this->sockets[]=$client;
$this->users[$key]=array(
'socket'=>$client,'shou'=>false
);
}else{
$len=0;
$buffer='';
do{
$l=socket_recv($sock,$buf,1000,0);
$len+=$l;
$buffer.=$buf;
}while($l==1000);
$k=$this->search($sock);
if($len<7){
$this->send2($k);
continue;
}
if(!$this->users[$k]['shou']){
$this->woshou($k,$buffer);
}else{
$buffer = $this->uncode($buffer,$k);
if($buffer==false){
continue;
}
$this->send($k,$buffer);
}
}
}

}

}

function close($k){
socket_close($this->users[$k]['socket']);
unset($this->users[$k]);
$this->sockets=array($this->master);
foreach($this->users as $v){
$this->sockets[]=$v['socket'];
}
$this->e("key:$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,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($str,$key){
$mask = array();
$data = '';
$msg = unpack('H*',$str);
$head = substr($msg[1],2);
if ($head == '81' && !isset($this->slen[$key])) {
$len=substr($msg[1],2,2);
$len=hexdec($len);
if(substr($msg[1],2)=='fe'){
$len=substr($msg[1],4,4);
$len=hexdec($len);
$msg[1]=substr($msg[1],4);
}else if(substr($msg[1],2)=='ff'){
$len=substr($msg[1],16);
$len=hexdec($len);
$msg[1]=substr($msg[1],16);
}
$mask[] = hexdec(substr($msg[1],2));
$mask[] = hexdec(substr($msg[1],6,8,10,2));
$s = 12;
$n=0;
}else if($this->slen[$key] > 0){
$len=$this->slen[$key];
$mask=$this->ar[$key];
$n=$this->n[$key];
$s = 0;
}

$e = strlen($msg[1])-2;
for ($i=$s; $i<= $e; $i+= 2) {
$data .= chr($mask[$n%4]^hexdec(substr($msg[1],$i,2)));
$n++;
}
$dlen=strlen($data);

if($len > 255 && $len > $dlen+intval($this->sjen[$key])){
$this->ar[$key]=$mask;
$this->slen[$key]=$len;
$this->sjen[$key]=$dlen+intval($this->sjen[$key]);
$this->sda[$key]=$this->sda[$key].$data;
$this->n[$key]=$n;
return false;
}else{
unset($this->ar[$key],$this->slen[$key],$this->sjen[$key],$this->n[$key]);
$data=$this->sda[$key].$data;
unset($this->sda[$key]);
return $data;
}

}

function code($msg){
$frame = array();
$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;
}
$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;
}

//用户加入
function send($k,$msg){
parse_str($msg,$g);
$ar=array();
if($g['type']=='add'){
$this->users[$k]['name']=$g['ming'];
$ar['type']='add';
$ar['name']=$g['ming'];
$key='all';
}else{
$ar['nrong']=$g['nr'];
$key=$g['key'];
}
$this->send1($k,$ar,$key);
}

function getusers(){
$ar=array();
foreach($this->users as $k=>$v){
$ar[]=array('code'=>$k,'name'=>$v['name']);
}
return $ar;
}

//$k 发信息人的code $key接受人的 code
function send1($k,$key='all'){
$ar['code1']=$key;
$ar['code']=$k;
$ar['time']=date('m-d H:i:s');
$str = $this->code(json_encode($ar));
if($key=='all'){
$users=$this->users;
if($ar['type']=='add'){
$ar['type']='madd';
$ar['users']=$this->getusers();
$str1 = $this->code(json_encode($ar));
socket_write($users[$k]['socket'],$str1,strlen($str1));
unset($users[$k]);
}
foreach($users as $v){
socket_write($v['socket'],$str,strlen($str));
}
}else{
socket_write($this->users[$k]['socket'],strlen($str));
socket_write($this->users[$key]['socket'],strlen($str));
}
}

//用户退出
function send2($k){
$this->close($k);
$ar['type']='rmove';
$ar['nrong']=$k;
$this->send1(false,'all');
}

function e($str){
//$path=dirname(FILE).'/log.txt';
$str=$str."\n";
//error_log($str,3,$path);
echo iconv('utf-8','gbk//IGNORE',$str);
}
}
?>