Detailed explanation of how to use websocket in PHP

关于PHP中websocket使用的详细注解，供大家参考。

服务端： 

<?php
//send用户加入
//send1发送信息
//send2退出登录
 
error_reporting(E_ALL ^ E_NOTICE);
ob_implicit_flush();
//file_put_contents(&#39;lz.text&#39;,&#39;123&#39;, FILE_APPEND);
$sk=new Sock(&#39;127.0.0.1&#39;,8000);
$sk->run();
class Sock{
 public $sockets;
 public $users;
 public $master;
  
 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, $port);//resource(2, Socket)  //服务器监听
 var_dump("master:");
 var_dump($this->master);
 $this->sockets=array($this->master);//array (size=1) 0 => resource(2, Socket) 。运行两个php还是这样
 //var_dump($this->sockets);
 //file_put_contents(&#39;lz.text&#39;,var_dump($this->sockets), FILE_APPEND);
 }
  
  
 function run(){
 while(true){
  $changes=$this->sockets;//$changes由多变1,但$this->sockets却只是稳定的+1;
   
  $write=NULL;
  $except=NULL;
  //1.运行select()系统调用在给定阵列插座与指定的超时
  //2.没有接收到数据就会一直处于阻塞状态,
  //3.若没有client过来,直阻塞进程,直到有client访问,返回1。
  //4.此时返回的changes,不是曾经的changes。虽然还只是一条记录,但已经不是服务器而是客户端
   
   /*select的特殊作用：！！！！！！！
  初始为array(0=>resource(2, Socket))
  1,初始状态返回为array(0=>resource(2, Socket))。但socket_accept可以得到resource(3, Socket)
  2,初始状态返回为array(0=>resource(2, Socket),1=>resource(3,Socket))。
   客户来的客户为resource(3,Socket)。则返回的数据为resource(3,Socket).!!!
   
  */
  var_dump($changes);
  $rr=socket_select($changes,$write,$except,NULL);
  var_dump($changes);
  var_dump("---*---");
  //exit;
  /*
  file_put_contents(&#39;lz.text&#39;,json_encode($changes), FILE_APPEND);
  file_put_contents(&#39;lz.text&#39;,&#39;-----&#39;, FILE_APPEND);*/
   
  foreach($changes as $sock){
  //连接主机的client
   
  //$this->master永远是 resource(2, Socket)。相当于一个缓存。两种情况,1:为空,使进程阻塞。2：存刚接收的client。
  if($sock==$this->master){ //---此处只用来存数据了
//在socket套接字已创建使用socket_create()，必将与socket_bind()名字，告诉听连接socket_listen()，这个函数将接受传入的连接，插座。
//一旦成功连接，将返回一个!!新的套接字资源！！，该资源可用于通信。如果套接字上有多个连接，则第一个将被使用。
//如果没有挂起的连接，socket_accept()将阻塞直到连接成为现在。如果使用了非阻塞套接字已socket_set_blocking()或socket_set_nonblock()，错误将返回。
//返回socket_accept()插座资源不得用于接受新的连接。原来的听插座插座，但是,仍然是开放的，可以重复使用。 
   $client=socket_accept($this->master); //resource(3, Socket)。表示接受请求,并创建一个子链接!!
    //var_dump($client);
   //exit;
   $key=uniqid();
   $this->sockets[]=$client;
   $this->users[$key]=array(  
   &#39;socket&#39;=>$client,
   &#39;shou&#39;=>false
   );
   /*
   array (size=1)
    &#39;57d607085f92a&#39; =>  //$key
   array (size=2)
    &#39;socket&#39; => resource(3, Socket) //$socket的表现都一样,只有通过$key区分
    &#39;shou&#39; => boolean false
    */
    
    
  // file_put_contents(&#39;lz.text&#39;,json_encode($this->users), FILE_APPEND);
  }else{ //---此处服务器与客户端发信息
   $len=0; 
   $buffer=&#39;&#39;;
   do{
   /*    
   int socket_recv ( resource socket, string &buf, int len, int flags )
   resource socket 是生成的套接字
   string &buf 是接收缓冲区
   int len 是你打算接收的长度
   int flags 是一个标志
   0x1 数据应该带外发送，所谓带外数据就是TCP紧急数据
   0x2 使有用的数据复制到缓冲区内，但并不从系统缓冲区内删除。
   0x4 不要将包路由出去。
   以上三项与sock.h文件中定义完全相同
   0x8 数据完整记录
   0x100 数据完整处理
   */
   $l=socket_recv($sock,$buf,1000,0);//原来取数据是一个缓慢的过程,要一次一次取数据,并计算每次buf的长度,让总长度不超过设定值
   //var_dump($l);
   // exit;
  // file_put_contents(&#39;lz.text&#39;,&#39;socket_recv&#39;, FILE_APPEND);
   $len+=$l;
   $buffer.=$buf;
   }while($l==1000);
   $k=$this->search($sock);//跟据sock返回key值
   if($len<7){ //发过来的消息太短了,系统就判断 断了,断掉链接。
   $this->send2($k);//用户退出。1关闭这个$key值对应的socket、删除这条key记录。将sockets数组对象重新排列。
                 //2
   continue;
   }
   if(!$this->users[$k][&#39;shou&#39;]){//判断用户的握手字段是true？否则重新握手。
   $this->woshou($k,$buffer);
   //file_put_contents(&#39;lz.text&#39;,&#39;woshou&#39;, FILE_APPEND);
   }else{ //如果用户已经握手,则与用户之间进行通信。终于可以发消息了！
   $buffer = $this->uncode($buffer,$k); //返编译
    
   if($buffer==false){
    continue;
   }
   //var_dump($bufffer);
   //exit;
   $this->send($k,$buffer);
   }
  }
  }
   
 }
  
 }
  
 function close($k){
 socket_close($this->users[$k][&#39;socket&#39;]);
 unset($this->users[$k]);
 $this->sockets=array($this->master);
 foreach($this->users as $v){
  $this->sockets[]=$v[&#39;socket&#39;];
 }
 $this->e("key:$k close");
 }
  
 function search($sock){
 foreach ($this->users as $k=>$v){
  if($sock==$v[&#39;socket&#39;])
  return $k;
 }
 return false;
 }
  
 function WebSocket($address,$port){ //服务器监听
 //创建并返回一个套接字resource，也称作一个通讯节点。一个典型的网络连接由 2 个套接字构成，一个运行在客户端，另一个运行在服务器端。 
 //协议，类型，具体协议
 $server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); //resource(2, Socket)
 //file_put_contents(&#39;lz.text&#39;,$server, FILE_APPEND);//supplied resource is not a valid stream resource
    //返回bool.套接字resource,协议级别,可用的socket选项,值。
 $r=socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1);//boolean true
  
 //绑定 address 到 socket。 该操作必须是在使用 socket_connect() 或者 socket_listen() 建立一个连接之前。 
 $r2=socket_bind($server, $address, $port);//boolean true
 
 
 //在socket套接字已创建使用socket_create()定界与socket_bind()名称，它可以告诉听套接字传入的连接.
 $r3=socket_listen($server);//boolean true
 
 $this->e(&#39;Server Started : &#39;.date(&#39;Y-m-d H:i:s&#39;));
 $this->e(&#39;Listening on  : &#39;.$address.&#39; port &#39;.$port);
 return $server;
 }
  
  
 function woshou($k,$buffer){
 //对接收到的buffer处理,并回馈握手！！
 $buf = substr($buffer,strpos($buffer,&#39;Sec-WebSocket-Key:&#39;)+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][&#39;socket&#39;],$new_message,strlen($new_message));//sokcet,buffer(缓冲区),长度
 $this->users[$k][&#39;shou&#39;]=true;
 return true;
  
 } 
  
 function uncode($str,$key){ //返编译
 $mask = array(); 
 $data = &#39;&#39;; 
 $msg = unpack(&#39;H*&#39;,$str);//unpack() 函数从二进制字符串对数据进行解包。
 $head = substr($msg[1],0,2); 
 if ($head == &#39;81&#39; && !isset($this->slen[$key])) { 
  $len=substr($msg[1],2,2);
  $len=hexdec($len);
  if(substr($msg[1],2,2)==&#39;fe&#39;){
  $len=substr($msg[1],4,4);
  $len=hexdec($len);//hexdec() 函数把十六进制转换为十进制。
  $msg[1]=substr($msg[1],4);
  }else if(substr($msg[1],2,2)==&#39;ff&#39;){
  $len=substr($msg[1],4,16);
  $len=hexdec($len);
  $msg[1]=substr($msg[1],16);
  }
  $mask[] = hexdec(substr($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;
  $n=0;
 }else if($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){ //编译
 $frame = array(); 
 $frame[0] = &#39;81&#39;; 
 $len = strlen($msg);
 if($len < 126){
  $frame[1] = $len<16?&#39;0&#39;.dechex($len):dechex($len);
 }else if($len < 65025){
  $s=dechex($len);
  $frame[1]=&#39;7e&#39;.str_repeat(&#39;0&#39;,4-strlen($s)).$s;
 }else{
  $s=dechex($len);
  $frame[1]=&#39;7f&#39;.str_repeat(&#39;0&#39;,16-strlen($s)).$s;
 }
 $frame[2] = $this->ord_hex($msg); 
 $data = implode(&#39;&#39;,$frame); 
 return pack("H*", $data); 
 }
  
 function ord_hex($data) { 
 $msg = &#39;&#39;; 
 $l = strlen($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);//把查询字符串解析到变量中
 $ar=array();
 if($g[&#39;type&#39;]==&#39;add&#39;){
  $this->users[$k][&#39;name&#39;]=$g[&#39;ming&#39;];
  $ar[&#39;type&#39;]=&#39;add&#39;;
  $ar[&#39;name&#39;]=$g[&#39;ming&#39;];
  $key=&#39;all&#39;;
 }else{
  $ar[&#39;nrong&#39;]=$g[&#39;nr&#39;];
  $key=$g[&#39;key&#39;];
 }
 $this->send1($k,$ar,$key);
 }
  
 function getusers(){
 $ar=array();
 foreach($this->users as $k=>$v){
  $ar[]=array(&#39;code&#39;=>$k,&#39;name&#39;=>$v[&#39;name&#39;]);
 }
 return $ar;
 }
  
 //$k 发信息人的code $key接受人的 code
 function send1($k,$ar,$key=&#39;all&#39;){
 $ar[&#39;code1&#39;]=$key;
 $ar[&#39;code&#39;]=$k;
 $ar[&#39;time&#39;]=date(&#39;m-d H:i:s&#39;);
 $str = $this->code(json_encode($ar));
 if($key==&#39;all&#39;){
  $users=$this->users;
  if($ar[&#39;type&#39;]==&#39;add&#39;){
  $ar[&#39;type&#39;]=&#39;madd&#39;;
  $ar[&#39;users&#39;]=$this->getusers();
  $str1 = $this->code(json_encode($ar));
  socket_write($users[$k][&#39;socket&#39;],$str1,strlen($str1));//发送者
  unset($users[$k]);
  }
  foreach($users as $v){
  socket_write($v[&#39;socket&#39;],$str,strlen($str));//接收者
  }
 }else{
  socket_write($this->users[$k][&#39;socket&#39;],$str,strlen($str));//发送者
  socket_write($this->users[$key][&#39;socket&#39;],$str,strlen($str));//接收者
 }
 }
  
 //用户退出
 function send2($k){
 $this->close($k);
 $ar[&#39;type&#39;]=&#39;rmove&#39;;
 $ar[&#39;nrong&#39;]=$k;
 $this->send1(false,$ar,&#39;all&#39;);
 }
  
 function e($str){
 //$path=dirname(__FILE__).&#39;/log.txt&#39;;
 $str=$str."\n";
 //error_log($str,3,$path);
 echo iconv(&#39;utf-8&#39;,&#39;gbk//IGNORE&#39;,$str);
 }
}
?>

 客户端：

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/>
<title>HTML5 websocket 网页聊天室 javascript php</title>
<style type="text/css">
body,p{margin:0px; padding:0px; font-size:14px; color:#333; font-family:Arial, Helvetica, sans-serif;}
#ltian,.rin{width:98%; margin:5px auto;}
#ltian{border:1px #ccc solid;overflow-y:auto; overflow-x:hidden; position:relative;}
#ct{margin-right:111px; height:100%;overflow-y:auto;overflow-x: hidden;}
#us{width:110px; overflow-y:auto; overflow-x:hidden; float:right; border-left:1px #ccc solid; height:100%; background-color:#F1F1F1;}
#us p{padding:3px 5px; color:#08C; line-height:20px; height:20px; cursor:pointer; overflow:hidden; white-space:nowrap; text-overflow:ellipsis;}
#us p:hover,#us p:active,#us p.ck{background-color:#069; color:#FFF;}
#us p.my:hover,#us p.my:active,#us p.my{color:#333;background-color:transparent;}
button{float:right; width:80px; height:35px; font-size:18px;}
input{width:100%; height:30px; padding:2px; line-height:20px; outline:none; border:solid 1px #CCC;}
.rin p{margin-right:160px;}
.rin span{float:right; padding:6px 5px 0px 5px; position:relative;}
.rin span img{margin:0px 3px; cursor:pointer;}
.rin span form{position:absolute; width:25px; height:25px; overflow:hidden; opacity:0; top:5px; right:5px;}
.rin span input{width:180px; height:25px; margin-left:-160px; cursor:pointer}
 
#ct p{padding:5px; line-height:20px;}
#ct a{color:#069; cursor:pointer;}
#ct span{color:#999; margin-right:10px;}
.c2{color:#999;}
.c3{background-color:#DBE9EC; padding:5px;}
.qp{position:absolute; font-size:12px; color:#666; top:5px; right:130px; text-decoration:none; color:#069;}
#ems{position:absolute; z-index:5; display:none; top:0px; left:0px; max-width:230px; background-color:#F1F1F1; border:solid 1px #CCC; padding:5px;}
#ems img{width:44px; height:44px; border:solid 1px #FFF; cursor:pointer;}
#ems img:hover,#ems img:active{border-color:#A4B7E3;}
#ems a{color:#069; border-radius:2px; display:inline-block; margin:2px 5px; padding:1px 8px; text-decoration:none; background-color:#D5DFFD;}
#ems a:hover,#ems a:active,#ems a.ck{color:#FFF; background-color:#069;}
.tc{text-align:center; margin-top:5px;}
</style>
</head>
 
<body>
<div id="ltian">
 <div id="us" class="jb"></div>
 <div id="ct"></div>
  <a href="javascript:;" class="qp" onClick="this.parentNode.children[1].innerHTML=&#39;&#39;">清屏</a>
</div>
<div class="rin">
  <button id="sd">发送</button>
  <span><img  src="/static/imghwm/default1.png"  data-src="http://www.yxsss.com/ui/sk/t.png"  class="lazy"   title="表情" id="imgbq" alt="Detailed explanation of how to use websocket in PHP" ><img  src="/static/imghwm/default1.png"  data-src="http://www.yxsss.com/ui/sk/e.png"  class="lazy"   title="上传图片" alt="Detailed explanation of how to use websocket in PHP" ><form><input type="file" title="上传图片" id="upimg"></form></span>
  <p><input id="nrong"></p>
</div>
<div id="ems"><p></p><p class="tc"></p></div>
<script>
if(typeof(WebSocket)==&#39;undefined&#39;){
 alert(&#39;你的浏览器不支持 WebSocket ，推荐使用Google Chrome 或者 Mozilla Firefox&#39;); 
}
</script>
<script src="http://www.yxsss.com/ui/p/a.js" type="text/javascript"></script>
<script>
(function(){
 var key=&#39;all&#39;,mkey;
 var users={};
 var url=&#39;ws://127.0.0.1:8000&#39;;
 var so=false,n=false;
 var lus=A.$(&#39;us&#39;),lct=A.$(&#39;ct&#39;);
 function st(){
 n=prompt(&#39;请给自己取一个响亮的名字：&#39;);
 n=n.substr(0,16);
 if(!n){
  return ; 
 }
 so=new WebSocket(url);
 so.onopen=function(){
  if(so.readyState==1){
    alert(&#39;888&#39;);
  so.send(&#39;type=add&ming=&#39;+n);
  }
 }
  
 so.onclose=function(){
  so=false;
  lct.appendChild(A.$$(&#39;<p class="c2">退出聊天室</p>&#39;));
 }
  
 so.onmessage=function(msg){
  eval(&#39;var da=&#39;+msg.data);
  var obj=false,c=false;
  if(da.type==&#39;add&#39;){
  var obj=A.$$(&#39;<p>&#39;+da.name+&#39;</p>&#39;);
  lus.appendChild(obj);
  cuser(obj,da.code);
  obj=A.$$(&#39;<p><span>[&#39;+da.time+&#39;]</span>欢迎<a>&#39;+da.name+&#39;</a>加入</p>&#39;);
  c=da.code;
  }else if(da.type==&#39;madd&#39;){
  mkey=da.code;
  da.users.unshift({&#39;code&#39;:&#39;all&#39;,&#39;name&#39;:&#39;大家&#39;});
  for(var i=0;i<da.users.length;i++){
   var obj=A.$$(&#39;<p>&#39;+da.users[i].name+&#39;</p>&#39;);
   lus.appendChild(obj);
   if(mkey!=da.users[i].code){
   cuser(obj,da.users[i].code);
   }else{
   obj.className=&#39;my&#39;;
   document.title=da.users[i].name;
   }
  }
  obj=A.$$(&#39;<p><span>[&#39;+da.time+&#39;]</span>欢迎&#39;+da.name+&#39;加入</p>&#39;);
  users.all.className=&#39;ck&#39;;
  }
   
  if(obj==false){
  if(da.type==&#39;rmove&#39;){
   var obj=A.$$(&#39;<p class="c2"><span>[&#39;+da.time+&#39;]</span>&#39;+users[da.nrong].innerHTML+&#39;退出聊天室</p>&#39;);
   lct.appendChild(obj);
   users[da.nrong].del();
   delete users[da.nrong];
  }else{
   da.nrong=da.nrong.replace(/{\\(\d+)}/g,function(a,b){
   return &#39;<img  src="/static/imghwm/default1.png"  data-src="sk/&#39;+b+&#39;.gif"  class="lazy"   alt="Detailed explanation of how to use websocket in PHP" >&#39;;
   }).replace(/^data\:image\/png;base64\,.{50,}$/i,function(a){
   return &#39;<img  src="/static/imghwm/default1.png"  data-src="&#39;+a+&#39;"  class="lazy"   alt="Detailed explanation of how to use websocket in PHP" >&#39;;
   });
   //da.code 发信息人的code
   if(da.code1==mkey){
   obj=A.$$(&#39;<p class="c3"><span>[&#39;+da.time+&#39;]</span><a>&#39;+users[da.code].innerHTML+&#39;</a>对我说：&#39;+da.nrong+&#39;</p>&#39;);
   c=da.code;
   }else if(da.code==mkey){
   if(da.code1!=&#39;all&#39;)
   obj=A.$$(&#39;<p class="c3"><span>[&#39;+da.time+&#39;]</span>我对<a>&#39;+users[da.code1].innerHTML+&#39;</a>说：&#39;+da.nrong+&#39;</p>&#39;);
   else
   obj=A.$$(&#39;<p><span>[&#39;+da.time+&#39;]</span>我对<a>&#39;+users[da.code1].innerHTML+&#39;</a>说：&#39;+da.nrong+&#39;</p>&#39;);
   c=da.code1;
   }else if(da.code==false){
   obj=A.$$(&#39;<p><span>[&#39;+da.time+&#39;]</span>&#39;+da.nrong+&#39;</p>&#39;);
   }else if(da.code1){
   obj=A.$$(&#39;<p><span>[&#39;+da.time+&#39;]</span><a>&#39;+users[da.code].innerHTML+&#39;</a>对&#39;+users[da.code1].innerHTML+&#39;说：&#39;+da.nrong+&#39;</p>&#39;);
   c=da.code;
   }
  }
  }
  if(c){
   obj.children[1].onclick=function(){
   users[c].onclick();
   }
  }
  lct.appendChild(obj);
  lct.scrollTop=Math.max(0,lct.scrollHeight-lct.offsetHeight);
 }
 }
 A.$(&#39;sd&#39;).onclick=function(){
 if(!so){
  return st();
 }
 var da=A.$(&#39;nrong&#39;).value.trim();
 if(da==&#39;&#39;){
  alert(&#39;内容不能为空&#39;);
  return false; 
 }
 A.$(&#39;nrong&#39;).value=&#39;&#39;;
 so.send(&#39;nr=&#39;+esc(da)+&#39;&key=&#39;+key);
 }
 A.$(&#39;nrong&#39;).onkeydown=function(e){
 var e=e||event;
 if(e.keyCode==13){
  A.$(&#39;sd&#39;).onclick();
 }
 }
 function esc(da){
 da=da.replace(/</g,&#39;<&#39;).replace(/>/g,&#39;>&#39;).replace(/\"/g,&#39;"&#39;);
 return encodeURIComponent(da);
 }
 function cuser(t,code){
 users[code]=t;
 t.onclick=function(){
  t.parentNode.children.rcss(&#39;ck&#39;,&#39;&#39;);
  t.rcss(&#39;&#39;,&#39;ck&#39;);
  key=code;
 }
 }
 A.$(&#39;ltian&#39;).style.height=(document.documentElement.clientHeight - 70)+&#39;px&#39;;
 st();
  
 
 var bq=A.$(&#39;imgbq&#39;),ems=A.$(&#39;ems&#39;);
 var l=80,r=4,c=5,s=0,p=Math.ceil(l/(r*c));
 var pt=&#39;sk/&#39;;
 bq.onclick=function(e){
 var e=e||event;
 if(!so){
  return st();
 }
 ems.style.display=&#39;block&#39;;
 document.onclick=function(){
  gb(); 
 }
 ct();
 try{e.stopPropagation();}catch(o){}
 }
  
 for(var i=0;i<p;i++){
 var a=A.$$(&#39;<a href="javascript:;">&#39;+(i+1)+&#39;</a>&#39;);
 ems.children[1].appendChild(a);
 ef(a,i);
 }
 ems.children[1].children[0].className=&#39;ck&#39;;
  
 function ct(){
 var wz=bq.weiz();
 with(ems.style){
  top=wz.y-242+&#39;px&#39;;
  left=wz.x+bq.offsetWidth-235+&#39;px&#39;;
 }
 }
  
 function ef(t,i){
 t.onclick=function(e){
  var e=e||event;
  s=i*r*c;
  ems.children[0].innerHTML=&#39;&#39;;
  hh();
  this.parentNode.children.rcss(&#39;ck&#39;,&#39;&#39;);
  this.rcss(&#39;&#39;,&#39;ck&#39;);
  try{e.stopPropagation();}catch(o){}
 }
 }
  
 function hh(){
 var z=Math.min(l,s+r*c);
 for(var i=s;i<z;i++){
  var a=A.$$(&#39;<img  src="/static/imghwm/default1.png"  data-src="&#39;+pt+i+&#39;.gif"  class="lazy"   alt="Detailed explanation of how to use websocket in PHP" >&#39;);
  hh1(a,i);
  ems.children[0].appendChild(a);
 }
 ct();
 }
  
 function hh1(t,i){
 t.onclick=function(e){
  var e=e||event;
  A.$(&#39;nrong&#39;).value+=&#39;{\\&#39;+i+&#39;}&#39;;
  if(!e.ctrlKey){
  gb();
  }
  try{e.stopPropagation();}catch(o){}
 }
 }
  
 function gb(){
 ems.style.display=&#39;&#39;;
 A.$(&#39;nrong&#39;).focus();
 document.onclick=&#39;&#39;;
 }
 hh();
 A.on(window,&#39;resize&#39;,function(){
 A.$(&#39;ltian&#39;).style.height=(document.documentElement.clientHeight - 70)+&#39;px&#39;;
 ct();
 }) 
 
 var fimg=A.$(&#39;upimg&#39;);
 var img=new Image();
 var dw=400,dh=300;
 A.on(fimg,&#39;change&#39;,function(ev){
 if(!so){
  st();
  return false;
 }
 if(key==&#39;all&#39;){
  alert(&#39;由于资源限制 发图只能私聊&#39;);
  return false; 
 }
 var f=ev.target.files[0];
 if(f.type.match(&#39;image.*&#39;)){
  var r = new FileReader();
  r.onload = function(e){
  img.setAttribute(&#39;src&#39;,e.target.result);
   };
  r.readAsDataURL(f);
 }
 });
 img.onload=function(){
 ih=img.height,iw=img.width;
 if(iw/ih > dw/dh && iw > dw){
  ih=ih/iw*dw;
  iw=dw;
 }else if(ih > dh){
  iw=iw/ih*dh;
  ih=dh;
 }
 var rc = A.$$(&#39;canvas&#39;);
 var ct = rc.getContext(&#39;2d&#39;);
 rc.width=iw;
 rc.height=ih;
 ct.drawImage(img,0,0,iw,ih);
 var da=rc.toDataURL();
 so.send(&#39;nr=&#39;+esc(da)+&#39;&key=&#39;+key);
 }
  
})();
</script>
</body>
</html>

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