使用php创建WebSocket服务

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

<?
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);
}
?>

<?php


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,"rn")));
 $new_key = base64_encode(sha1($key."258EAFA5-E914-47DA-95CA-C5AB0DC85B11",true));
 $new_message ="HTTP/1.1 101 Switching Protocolsrn";
 $new_message .="Upgrade: websocketrn";
 $new_message .="Sec-WebSocket-Version: 13rn";
 $new_message .="Connection: Upgradern";
 $new_message .="Sec-WebSocket-Accept:". $new_key ."rnrn";
socket_write($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$/','/rn$/',), '', $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."rn";
 fwrite(STDOUT, iconv('utf-8','gbk//IGNORE',$t));
}
}
}