详解PHP中websocket的使用方法

2019-05-03 01:27:14于海丽

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<!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=''">清屏</a>
</div>
<div class="rin">
  <button id="sd">发送</button>
  <span><img src="http://www.yxsss.com/ui/sk/t.png" title="表情" id="imgbq"><img src="http://www.yxsss.com/ui/sk/e.png" title="上传图片"><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)=='undefined'){
 alert('你的浏览器不支持 WebSocket ,推荐使用Google Chrome 或者 Mozilla Firefox'); 
}
</script>
<script src="http://www.yxsss.com/ui/p/a.js" type="text/javascript"></script>
<script>
(function(){
 var key='all',mkey;
 var users={};
 var url='ws://127.0.0.1:8000';
 var so=false,n=false;
 var lus=A.$('us'),lct=A.$('ct');
 function st(){
 n=prompt('请给自己取一个响亮的名字:');
 n=n.substr(0,16);
 if(!n){
  return ; 
 }
 so=new WebSocket(url);
 so.onopen=function(){
  if(so.readyState==1){
    alert('888');
  so.send('type=add&ming='+n);
  }
 }
 
 so.onclose=function(){
  so=false;
  lct.appendChild(A.$$('<p class="c2">退出聊天室</p>'));
 }
 
 so.onmessage=function(msg){
  eval('var da='+msg.data);
  var obj=false,c=false;
  if(da.type=='add'){
  var obj=A.$$('<p>'+da.name+'</p>');
  lus.appendChild(obj);
  cuser(obj,da.code);
  obj=A.$$('<p><span>['+da.time+']</span>欢迎<a>'+da.name+'</a>加入</p>');
  c=da.code;
  }else if(da.type=='madd'){
  mkey=da.code;
  da.users.unshift({'code':'all','name':'大家'});
  for(var i=0;i<da.users.length;i++){
   var obj=A.$$('<p>'+da.users[i].name+'</p>');
   lus.appendChild(obj);
   if(mkey!=da.users[i].code){
   cuser(obj,da.users[i].code);
   }else{
   obj.className='my';
   document.title=da.users[i].name;
   }
  }
  obj=A.$$('<p><span>['+da.time+']</span>欢迎'+da.name+'加入</p>');
  users.all.className='ck';
  }
  
  if(obj==false){
  if(da.type=='rmove'){
   var obj=A.$$('<p class="c2"><span>['+da.time+']</span>'+users[da.nrong].innerHTML+'退出聊天室</p>');
   lct.appendChild(obj);
   users[da.nrong].del();
   delete users[da.nrong];
  }else{
   da.nrong=da.nrong.replace(/{(d+)}/g,function(a,b){
   return '<img src="sk/'+b+'.gif">';
   }).replace(/^data:image/png;base64,.{50,}$/i,function(a){
   return '<img src="'+a+'">';
   });
   //da.code 发信息人的code
   if(da.code1==mkey){
   obj=A.$$('<p class="c3"><span>['+da.time+']</span><a>'+users[da.code].innerHTML+'</a>对我说:'+da.nrong+'</p>');
   c=da.code;
   }else if(da.code==mkey){
   if(da.code1!='all')
   obj=A.$$('<p class="c3"><span>['+da.time+']</span>我对<a>'+users[da.code1].innerHTML+'</a>说:'+da.nrong+'</p>');
   else
   obj=A.$$('<p><span>['+da.time+']</span>我对<a>'+users[da.code1].innerHTML+'</a>说:'+da.nrong+'</p>');
   c=da.code1;
   }else if(da.code==false){
   obj=A.$$('<p><span>['+da.time+']</span>'+da.nrong+'</p>');
   }else if(da.code1){
   obj=A.$$('<p><span>['+da.time+']</span><a>'+users[da.code].innerHTML+'</a>对'+users[da.code1].innerHTML+'说:'+da.nrong+'</p>');
   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.$('sd').onclick=function(){
 if(!so){
  return st();
 }
 var da=A.$('nrong').value.trim();
 if(da==''){
  alert('内容不能为空');
  return false; 
 }
 A.$('nrong').value='';
 so.send('nr='+esc(da)+'&key='+key);
 }
 A.$('nrong').onkeydown=function(e){
 var e=e||event;
 if(e.keyCode==13){
  A.$('sd').onclick();
 }
 }
 function esc(da){
 da=da.replace(/</g,'<').replace(/>/g,'>').replace(/"/g,'"');
 return encodeURIComponent(da);
 }
 function cuser(t,code){
 users[code]=t;
 t.onclick=function(){
  t.parentNode.children.rcss('ck','');
  t.rcss('','ck');
  key=code;
 }
 }
 A.$('ltian').style.height=(document.documentElement.clientHeight - 70)+'px';
 st();
 

 var bq=A.$('imgbq'),ems=A.$('ems');
 var l=80,r=4,c=5,s=0,p=Math.ceil(l/(r*c));
 var pt='sk/';
 bq.onclick=function(e){
 var e=e||event;
 if(!so){
  return st();
 }
 ems.style.display='block';
 document.onclick=function(){
  gb(); 
 }
 ct();
 try{e.stopPropagation();}catch(o){}
 }
 
 for(var i=0;i<p;i++){
 var a=A.$$('<a href="javascript:;">'+(i+1)+'</a>');
 ems.children[1].appendChild(a);
 ef(a,i);
 }
 ems.children[1].children[0].className='ck';
 
 function ct(){
 var wz=bq.weiz();
 with(ems.style){
  top=wz.y-242+'px';
  left=wz.x+bq.offsetWidth-235+'px';
 }
 }
 
 function ef(t,i){
 t.onclick=function(e){
  var e=e||event;
  s=i*r*c;
  ems.children[0].innerHTML='';
  hh();
  this.parentNode.children.rcss('ck','');
  this.rcss('','ck');
  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.$$('<img src="'+pt+i+'.gif">');
  hh1(a,i);
  ems.children[0].appendChild(a);
 }
 ct();
 }
 
 function hh1(t,i){
 t.onclick=function(e){
  var e=e||event;
  A.$('nrong').value+='{'+i+'}';
  if(!e.ctrlKey){
  gb();
  }
  try{e.stopPropagation();}catch(o){}
 }
 }
 
 function gb(){
 ems.style.display='';
 A.$('nrong').focus();
 document.onclick='';
 }
 hh();
 A.on(window,'resize',function(){
 A.$('ltian').style.height=(document.documentElement.clientHeight - 70)+'px';
 ct();
 }) 

 var fimg=A.$('upimg');
 var img=new Image();
 var dw=400,dh=300;
 A.on(fimg,'change',function(ev){
 if(!so){
  st();
  return false;
 }
 if(key=='all'){
  alert('由于资源限制 发图只能私聊');
  return false; 
 }
 var f=ev.target.files[0];
 if(f.type.match('image.*')){
  var r = new FileReader();
  r.onload = function(e){
  img.setAttribute('src',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.$$('canvas');
 var ct = rc.getContext('2d');
 rc.width=iw;
 rc.height=ih;
 ct.drawImage(img,0,0,iw,ih);
 var da=rc.toDataURL();
 so.send('nr='+esc(da)+'&key='+key);
 }
 
})();
</script>
</body>
</html>
								 
			 
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