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這篇文章主要介紹PHP中websocket怎么用,文中介紹的非常詳細(xì),具有一定的參考價(jià)值,感興趣的小伙伴們一定要看完!
服務(wù)端:
<?php //send用戶加入 //send1發(fā)送信息 //send2退出登錄 error_reporting(E_ALL ^ E_NOTICE); ob_implicit_flush(); //file_put_contents('lz.text','123', FILE_APPEND); $sk=new Sock('127.0.0.1',8000); $sk->run(); class Sock{ public $sockets; public $users; public $master; private $sda=array();//已接收的數(shù)據(jù) private $slen=array();//數(shù)據(jù)總長(zhǎng)度 private $sjen=array();//接收數(shù)據(jù)的長(zhǎng)度 private $ar=array();//加密key private $n=array(); public function __construct($address, $port){ $this->master=$this->WebSocket($address, $port);//resource(2, Socket) //服務(wù)器監(jiān)聽 var_dump("master:"); var_dump($this->master); $this->sockets=array($this->master);//array (size=1) 0 => resource(2, Socket) 。運(yùn)行兩個(gè)php還是這樣 //var_dump($this->sockets); //file_put_contents('lz.text',var_dump($this->sockets), FILE_APPEND); } function run(){ while(true){ $changes=$this->sockets;//$changes由多變1,但$this->sockets卻只是穩(wěn)定的+1; $write=NULL; $except=NULL; //1.運(yùn)行select()系統(tǒng)調(diào)用在給定陣列插座與指定的超時(shí) //2.沒有接收到數(shù)據(jù)就會(huì)一直處于阻塞狀態(tài), //3.若沒有client過來,直阻塞進(jìn)程,直到有client訪問,返回1。 //4.此時(shí)返回的changes,不是曾經(jīng)的changes。雖然還只是一條記錄,但已經(jīng)不是服務(wù)器而是客戶端 /*select的特殊作用:!?。。。。。? 初始為array(0=>resource(2, Socket)) 1,初始狀態(tài)返回為array(0=>resource(2, Socket))。但socket_accept可以得到resource(3, Socket) 2,初始狀態(tài)返回為array(0=>resource(2, Socket),1=>resource(3,Socket))。 客戶來的客戶為resource(3,Socket)。則返回的數(shù)據(jù)為resource(3,Socket).!!! */ var_dump($changes); $rr=socket_select($changes,$write,$except,NULL); var_dump($changes); var_dump("---*---"); //exit; /* file_put_contents('lz.text',json_encode($changes), FILE_APPEND); file_put_contents('lz.text','-----', FILE_APPEND);*/ foreach($changes as $sock){ //連接主機(jī)的client //$this->master永遠(yuǎn)是 resource(2, Socket)。相當(dāng)于一個(gè)緩存。兩種情況,1:為空,使進(jìn)程阻塞。2:存剛接收的client。 if($sock==$this->master){ //---此處只用來存數(shù)據(jù)了 //在socket套接字已創(chuàng)建使用socket_create(),必將與socket_bind()名字,告訴聽連接socket_listen(),這個(gè)函數(shù)將接受傳入的連接,插座。 //一旦成功連接,將返回一個(gè)!!新的套接字資源!!,該資源可用于通信。如果套接字上有多個(gè)連接,則第一個(gè)將被使用。 //如果沒有掛起的連接,socket_accept()將阻塞直到連接成為現(xiàn)在。如果使用了非阻塞套接字已socket_set_blocking()或socket_set_nonblock(),錯(cuò)誤將返回。 //返回socket_accept()插座資源不得用于接受新的連接。原來的聽插座插座,但是,仍然是開放的,可以重復(fù)使用。 $client=socket_accept($this->master); //resource(3, Socket)。表示接受請(qǐng)求,并創(chuàng)建一個(gè)子鏈接!! //var_dump($client); //exit; $key=uniqid(); $this->sockets[]=$client; $this->users[$key]=array( 'socket'=>$client, 'shou'=>false ); /* array (size=1) '57d607085f92a' => //$key array (size=2) 'socket' => resource(3, Socket) //$socket的表現(xiàn)都一樣,只有通過$key區(qū)分 'shou' => boolean false */ // file_put_contents('lz.text',json_encode($this->users), FILE_APPEND); }else{ //---此處服務(wù)器與客戶端發(fā)信息 $len=0; $buffer=''; do{ /* int socket_recv ( resource socket, string &buf, int len, int flags ) resource socket 是生成的套接字 string &buf 是接收緩沖區(qū) int len 是你打算接收的長(zhǎng)度 int flags 是一個(gè)標(biāo)志 0x1 數(shù)據(jù)應(yīng)該帶外發(fā)送,所謂帶外數(shù)據(jù)就是TCP緊急數(shù)據(jù) 0x2 使有用的數(shù)據(jù)復(fù)制到緩沖區(qū)內(nèi),但并不從系統(tǒng)緩沖區(qū)內(nèi)刪除。 0x4 不要將包路由出去。 以上三項(xiàng)與sock.h文件中定義完全相同 0x8 數(shù)據(jù)完整記錄 0x100 數(shù)據(jù)完整處理 */ $l=socket_recv($sock,$buf,1000,0);//原來取數(shù)據(jù)是一個(gè)緩慢的過程,要一次一次取數(shù)據(jù),并計(jì)算每次buf的長(zhǎng)度,讓總長(zhǎng)度不超過設(shè)定值 //var_dump($l); // exit; // file_put_contents('lz.text','socket_recv', FILE_APPEND); $len+=$l; $buffer.=$buf; }while($l==1000); $k=$this->search($sock);//跟據(jù)sock返回key值 if($len<7){ //發(fā)過來的消息太短了,系統(tǒng)就判斷 斷了,斷掉鏈接。 $this->send2($k);//用戶退出。1關(guān)閉這個(gè)$key值對(duì)應(yīng)的socket、刪除這條key記錄。將sockets數(shù)組對(duì)象重新排列。 //2 continue; } if(!$this->users[$k]['shou']){//判斷用戶的握手字段是true?否則重新握手。 $this->woshou($k,$buffer); //file_put_contents('lz.text','woshou', FILE_APPEND); }else{ //如果用戶已經(jīng)握手,則與用戶之間進(jìn)行通信。終于可以發(fā)消息了! $buffer = $this->uncode($buffer,$k); //返編譯 if($buffer==false){ continue; } //var_dump($bufffer); //exit; $this->send($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){ //服務(wù)器監(jiān)聽 //創(chuàng)建并返回一個(gè)套接字resource,也稱作一個(gè)通訊節(jié)點(diǎn)。一個(gè)典型的網(wǎng)絡(luò)連接由 2 個(gè)套接字構(gòu)成,一個(gè)運(yùn)行在客戶端,另一個(gè)運(yùn)行在服務(wù)器端。 //協(xié)議,類型,具體協(xié)議 $server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); //resource(2, Socket) //file_put_contents('lz.text',$server, FILE_APPEND);//supplied resource is not a valid stream resource //返回bool.套接字resource,協(xié)議級(jí)別,可用的socket選項(xiàng),值。 $r=socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1);//boolean true //綁定 address 到 socket。 該操作必須是在使用 socket_connect() 或者 socket_listen() 建立一個(gè)連接之前。 $r2=socket_bind($server, $address, $port);//boolean true //在socket套接字已創(chuàng)建使用socket_create()定界與socket_bind()名稱,它可以告訴聽套接字傳入的連接. $r3=socket_listen($server);//boolean true $this->e('Server Started : '.date('Y-m-d H:i:s')); $this->e('Listening on : '.$address.' port '.$port); return $server; } function woshou($k,$buffer){ //對(duì)接收到的buffer處理,并回饋握手!! $buf = substr($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));//sokcet,buffer(緩沖區(qū)),長(zhǎng)度 $this->users[$k]['shou']=true; return true; } function uncode($str,$key){ //返編譯 $mask = array(); $data = ''; $msg = unpack('H*',$str);//unpack() 函數(shù)從二進(jìn)制字符串對(duì)數(shù)據(jù)進(jìn)行解包。 $head = substr($msg[1],0,2); if ($head == '81' && !isset($this->slen[$key])) { $len=substr($msg[1],2,2); $len=hexdec($len); if(substr($msg[1],2,2)=='fe'){ $len=substr($msg[1],4,4); $len=hexdec($len);//hexdec() 函數(shù)把十六進(jìn)制轉(zhuǎn)換為十進(jìn)制。 $msg[1]=substr($msg[1],4); }else if(substr($msg[1],2,2)=='ff'){ $len=substr($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){ //編譯 $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 $msg; } //用戶加入 function send($k,$msg){ parse_str($msg,$g);//把查詢字符串解析到變量中 $ar=array(); if($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 發(fā)信息人的code $key接受人的 code function send1($k,$ar,$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));//發(fā)送者 unset($users[$k]); } foreach($users as $v){ socket_write($v['socket'],$str,strlen($str));//接收者 } }else{ socket_write($this->users[$k]['socket'],$str,strlen($str));//發(fā)送者 socket_write($this->users[$key]['socket'],$str,strlen($str));//接收者 } } //用戶退出 function send2($k){ $this->close($k); $ar['type']='rmove'; $ar['nrong']=$k; $this->send1(false,$ar,'all'); } function e($str){ //$path=dirname(__FILE__).'/log.txt'; $str=$str."\n"; //error_log($str,3,$path); echo iconv('utf-8','gbk//IGNORE',$str); } } ?>
客戶端:
<!doctype html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/> <title>HTML5 websocket 網(wǎng)頁(yè)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">發(fā)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="上傳圖片"><form><input type="file" title="上傳圖片" 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('你的瀏覽器不支持 WebSocket ,推薦使用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('請(qǐng)給自己取一個(gè)響亮的名字:'); 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.$$('<p><span>['+da.time+']</span>歡迎<a>'+da.name+'</a>加入</p>'); c=da.code; }else if(da.type=='madd'){ mkey=da.code; da.users.unshift({'code':'all','name':'大家'}); for(var i=0;i<da.users.length;i++){ var obj=A.$$('<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.$$('<p><span>['+da.time+']</span>歡迎'+da.name+'加入</p>'); users.all.className='ck'; } if(obj==false){ if(da.type=='rmove'){ var obj=A.$$('<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 發(fā)信息人的code if(da.code1==mkey){ obj=A.$$('<p class="c3"><span>['+da.time+']</span><a>'+users[da.code].innerHTML+'</a>對(duì)我說:'+da.nrong+'</p>'); c=da.code; }else if(da.code==mkey){ if(da.code1!='all') obj=A.$$('<p class="c3"><span>['+da.time+']</span>我對(duì)<a>'+users[da.code1].innerHTML+'</a>說:'+da.nrong+'</p>'); else obj=A.$$('<p><span>['+da.time+']</span>我對(duì)<a>'+users[da.code1].innerHTML+'</a>說:'+da.nrong+'</p>'); c=da.code1; }else if(da.code==false){ obj=A.$$('<p><span>['+da.time+']</span>'+da.nrong+'</p>'); }else if(da.code1){ obj=A.$$('<p><span>['+da.time+']</span><a>'+users[da.code].innerHTML+'</a>對(duì)'+users[da.code1].innerHTML+'說:'+da.nrong+'</p>'); c=da.code; } } } if(c){ obj.children[1].onclick=function(){ users[c].onclick(); } } lct.appendChild(obj); lct.scrollTop=Math.max(0,lct.scrollHeight-lct.offsetHeight); } } A.$('sd').onclick=function(){ if(!so){ return st(); } var da=A.$('nrong').value.trim(); if(da==''){ alert('內(nèi)容不能為空'); return false; } A.$('nrong').value=''; so.send('nr='+esc(da)+'&key='+key); } A.$('nrong').onkeydown=function(e){ var e=e||event; if(e.keyCode==13){ A.$('sd').onclick(); } } function esc(da){ da=da.replace(/</g,'<').replace(/>/g,'>').replace(/\"/g,'"'); return encodeURIComponent(da); } function cuser(t,code){ users[code]=t; t.onclick=function(){ t.parentNode.children.rcss('ck',''); t.rcss('','ck'); key=code; } } A.$('ltian').style.height=(document.documentElement.clientHeight - 70)+'px'; st(); var bq=A.$('imgbq'),ems=A.$('ems'); var l=80,r=4,c=5,s=0,p=Math.ceil(l/(r*c)); var pt='sk/'; bq.onclick=function(e){ var e=e||event; if(!so){ return st(); } ems.style.display='block'; document.onclick=function(){ gb(); } ct(); try{e.stopPropagation();}catch(o){} } for(var i=0;i<p;i++){ var a=A.$$('<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.$$('<img src="'+pt+i+'.gif">'); hh2(a,i); ems.children[0].appendChild(a); } ct(); } function hh2(t,i){ t.onclick=function(e){ var e=e||event; A.$('nrong').value+='{\\'+i+'}'; if(!e.ctrlKey){ gb(); } try{e.stopPropagation();}catch(o){} } } function gb(){ ems.style.display=''; A.$('nrong').focus(); document.onclick=''; } hh(); A.on(window,'resize',function(){ A.$('ltian').style.height=(document.documentElement.clientHeight - 70)+'px'; ct(); }) var fimg=A.$('upimg'); var img=new Image(); var dw=400,dh=300; A.on(fimg,'change',function(ev){ if(!so){ st(); return false; } if(key=='all'){ alert('由于資源限制 發(fā)圖只能私聊'); return false; } var f=ev.target.files[0]; if(f.type.match('image.*')){ var r = new FileReader(); r.onload = function(e){ img.setAttribute('src',e.target.result); }; r.readAsDataURL(f); } }); img.onload=function(){ ih=img.height,iw=img.width; if(iw/ih > dw/dh && iw > dw){ ih=ih/iw*dw; iw=dw; }else if(ih > dh){ iw=iw/ih*dh; ih=dh; } var rc = A.$$('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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