php 超大文件下载程序[http 缓存协商，Etag标记，断点续传]

<?php教程 

002 $file_path = './download/download_cn.rar'; 

003   

004 //使用方法 

005 downFile($file_path); 

006   

007 // 服务器文件路径，下载文件名字(默认为服务器文件名)，是否许可用户下载方式(默认可选)，速度限制(默认自动)，文件类型(默认所有) 

008 function downFile($fileName, $fancyName = '', $forceDownload = true, $speedLimit = 0, $contentType = '') {  

009     if (!is_readable($fileName))  

010     {  

011         header("HTTP/1.1 404 Not Found");  

012         return false;  

013     }  

014     

015     $fileStat = stat($fileName);  

016     $lastModified = $fileStat['mtime'];  

017     

018     $md5 = md5($fileStat['mtime'] .'='. $fileStat['ino'] .'='. $fileStat['size']);  

019     $etag = '"' . $md5 . '-' . crc32($md5) . '"';  

020     

021     header('Last-Modified: ' . gmdate("D, d M Y H:i:s", $lastModified) . ' GMT');  

022     header("ETag: $etag");  

023     

024     if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified)  

025     {  

026         header("HTTP/1.1 304 Not Modified");  

027         return true;  

028     }  

029     

030     if (isset($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) < $lastModified)  

031     {  

032         header("HTTP/1.1 304 Not Modified");  

033         return true;  

034     }  

035     

036     if (isset($_SERVER['HTTP_IF_NONE_MATCH']) &&  $_SERVER['HTTP_IF_NONE_MATCH'] == $etag)  

037     {  

038         header("HTTP/1.1 304 Not Modified");  

039         return true;  

040     }  

041     

042     if ($fancyName == '')  

043     {  

044         $fancyName = basename($fileName);  

045     }  

046     

047     if ($contentType == '')  

048     {  

049         $contentType = 'application/octet-stream';  

050     }  

051     

052     $fileSize = $fileStat['size'];  

053     

054     $contentLength = $fileSize;  

055     $isPartial = false;  

056     

057     if (isset($_SERVER['HTTP_RANGE']))  

058     {  

059         if (preg_match('/^bytes=(d*)-(d*)$/', $_SERVER['HTTP_RANGE'], $matches))  

060         {  

061             $startPos = $matches[1];  

062             $endPos = $matches[2];  

063     

064             if ($startPos == '' && $endPos == '')  

065             {  

066                 return false;  

067             }  

068     

069             if ($startPos == '')  

070             {  

071                 $startPos = $fileSize - $endPos;  

072                 $endPos = $fileSize - 1;  

073             }  

074             else if ($endPos == '')  

075             {  

076                 $endPos = $fileSize - 1;  

077             }  

078     

079             $startPos = $startPos < 0 ? 0 : $startPos;  

080             $endPos = $endPos > $fileSize - 1 ? $fileSize - 1 : $endPos;  

081     

082             $length = $endPos - $startPos + 1;  

083     

084             if ($length < 0)  

085             {  

086                 return false;  

087             }  

088     

089             $contentLength = $length;  

090             $isPartial = true;  

091         }  

092     }  

093     

094     // send headers  

095     if ($isPartial)  

096     {  

097         header('HTTP/1.1 206 Partial Content');  

098         header("Content-Range: bytes $startPos-$endPos/$fileSize");  

099     

100     }  

101     else 

102     {  

103         header("HTTP/1.1 200 OK");  

104         $startPos = 0;  

105         $endPos = $contentLength - 1;  

106     }  

107     

108     header('Pragma: cache');  

109     header('Cache-Control: public, must-revalidate, max-age=0');  

110     header('Accept-Ranges: bytes');  

111     header('Content-type: ' . $contentType);  

112     header('Content-Length: ' . $contentLength);  

113     

114     if ($forceDownload)  

115     {  

116         header('Content-Disposition: attachment; filename="' . rawurlencode($fancyName). '"');  

117     }  

118     

119     header("Content-Transfer-Encoding: binary");  

120     

121     $bufferSize = 2048;  

122     

123     if ($speedLimit != 0)  

124     {  

125         $packetTime = floor($bufferSize * 1000000 / $speedLimit);  

126     }  

127     

128     $bytesSent = 0;  

129     $fp = fopen($fileName, "rb");  

130     fseek($fp, $startPos);  

131     while ($bytesSent < $contentLength && !feof($fp) && connection_status() == 0 )  

132     {  

133         if ($speedLimit != 0)  

134         {  

135             list($usec, $sec) = explode(" ", microtime());  

136             $outputTimeStart = ((float)$usec + (float)$sec);  

137         }  

138     

139         $readBufferSize = $contentLength - $bytesSent < $bufferSize ? $contentLength - $bytesSent : $bufferSize;  

140         $buffer = fread($fp, $readBufferSize);  

141     

142         echo $buffer;  

143     

144         ob_flush();  

145         flush();  

146     

147         $bytesSent += $readBufferSize;  

148     

149         if ($speedLimit != 0)  

150         {  

151             list($usec, $sec) = explode(" ", microtime());  

152             $outputTimeEnd = ((float)$usec + (float)$sec);  

153     

154             $useTime = ((float) $outputTimeEnd - (float) $outputTimeStart) * 1000000;  

155             $sleepTime = round($packetTime - $useTime);  

156             if ($sleepTime > 0)  

157             {  

158                 usleep($sleepTime);  

159             }  

160         }  

161     }  

162     return true;  

163 }  

164 ?>

<?php教程 

002 /** 

003  * <SPAN class=t_tag onclick=tagshow(event) href="tag.php?name=%CE%C4%BC%FE">文件</SPAN>传输，支持断点续传。 

004  * 2g以上超大文件也有效 

005  * @author MoXie 

006  */

007 class Transfer { 

008     /** 

009      * 缓冲单元 

010      */

011     const BUFF_SIZE = 5120; // 1024 * 5 

012     /** 

013      * 文件地址 

014      * @var <String> 

015      */

016     private $filePath; 

017     /** 

018      * 文件大小 

019      * @var <String> Php超大数字 <SPAN class=t_tag onclick=tagshow(event) href="tag.php?name=%D7%D6%B7%FB">字符</SPAN>串形式描述 

020      */

021     private $fileSize; 

022     /** 

023      * 文件类型 

024      * @var <String> 

025      */

026     private $mimeType; 

027     /** 

028      * 请求区域（范围） 

029      * @var <String> 

030      */

031     private $range; 

032     /** 

033      * 是否写入日志 

034      * @var <Boolean> 

035      */

036     private $isLog = false; 

037     /** 

038      * 

039      * @param <String> $filePath 文件路径 

040      * @param <String> $mimeType  文件类型 

041      * @param <String> $range 请求区域（范围） 

042      */

043     function __construct($filePath, $mimeType = null , $range = null) { 

044         $this->filePath = $filePath; 

045         $this->fileSize = sprintf('%u',filesize($filePath)); 

046         $this->mimeType = ($mimeType != null)?$mimeType:"application/octet-stream"; //  bin 

047         $this->range = trim($range); 

048     } 

049     /** 

050      *  获取文件区域 

051      * @return <Map> {'start':long,'end':long} or null 

052      */

053     private function getRange() { 

054         /** 

055          *  Range: bytes=-128 

056          *  Range: bytes=-128 

057          *  Range: bytes=28-175,382-399,510-541,644-744,977-980 

058          *  Range: bytes=28-175n380 

059          *  type 1 

060          *  RANGE: bytes=1000-9999 

061          *  RANGE: bytes=2000-9999 

062          *  type 2 

063          *  RANGE: bytes=1000-1999 

064          *  RANGE: bytes=2000-2999 

065          *  RANGE: bytes=3000-3999 

066          */

067         if (!empty($this->range)) { 

068             $range = preg_replace('/[s|,].*/','',$this->range); 

069             $range = explode('-',substr($range,6)); 

070             if (count($range) < 2 ) { 

071                 $range[1] = $this->fileSize; // Range: bytes=-100 

072             } 

073             $range = array_combine(array('start','end'),$range); 

074             if (empty($range['start'])) { 

075                 $range['start'] = 0; 

076             } 

077             if (!isset ($range['end']) || empty($range['end'])) { 

078                 $range['end'] = $this->fileSize; 

079             } 

080             return $range; 

081         } 

082         return null; 

083     } 

084     /** 

085      * 向客户端发送文件 

086      */

087     public function send() { 

088         $fileHande = fopen($this->filePath, 'rb'); 

089         if ($fileHande) { 

090             // setting 

091             ob_end_clean();// clean cache 

092             ob_start(); 

093             ini_set('output_buffering', 'Off'); 

094             ini_set('zlib.output_compression', 'Off'); 

095             $magicQuotes = get_magic_quotes_gpc(); 

096             set_magic_quotes_runtime(0); 

097             // init 

098             $lastModified = gmdate('D, d M Y H:i:s', filemtime($this->filePath)).' GMT'; 

099             $etag = sprintf('w/"%s:%s"',md5($lastModified),$this->fileSize); 

100             $ranges = $this->getRange(); 

101             // headers 

102             header(sprintf('Last-Modified: %s',$lastModified)); 

103             header(sprintf('ETag: %s',$etag)); 

104             header(sprintf('Content-Type: %s',$this->mimeType)); 

105             $disposition = 'attachment'; 

106             if (strpos($this->mimeType,'image/') !== FALSE) { 

107                 $disposition = 'inline'; 

108             } 

109             header(sprintf('Content-Disposition: %s; filename="%s"',$disposition,basename($this->filePath))); 

110   

111             if ($ranges != null) { 

112                 if ($this->isLog) { 

113                     $this->log(json_encode($ranges).' '.$_SERVER['HTTP_RANGE']); 

114                 } 

115                 header('HTTP/1.1 206 Partial Content'); 

116                 header('Accept-Ranges: bytes'); 

117                 header(sprintf('Content-Length: %u',$ranges['end'] - $ranges['start'])); 

118                 header(sprintf('Content-Range: bytes %s-%s/%s', $ranges['start'], $ranges['end'],$this->fileSize)); 

119                 // 

120                 fseek($fileHande, sprintf('%u',$ranges['start'])); 

121             }else { 

122                 header("HTTP/1.1 200 OK"); 

123                 header(sprintf('Content-Length: %s',$this->fileSize)); 

124             } 

125             // read file 

126             $lastSize = 0; 

127             while(!feof($fileHande) && !connection_aborted()) { 

128                 $lastSize = sprintf("%u", bcsub($this->fileSize,sprintf("%u",ftell($fileHande)))); 

129                 if (bccomp($lastSize,self::BUFF_SIZE) > 0) { 

130                     $lastSize = self::BUFF_SIZE; 

131                 } 

132                 echo fread($fileHande, $lastSize); 

133                 flush(); 

134                 ob_flush(); 

135             } 

136             set_magic_quotes_runtime($magicQuotes); 

137             ob_end_flush(); 

138         } 

139         if ($fileHande != null) { 

140             fclose($fileHande); 

141         } 

142     } 

143     /** 

144      * 设置记录 

145      * @param <Boolean> $isLog  是否记录 

146      */

147     public function setIsLog($isLog = true) { 

148         $this->isLog = $isLog; 

149     } 

150     /** 

151      * 记录 

152      * @param <String> $msg  记录信息 

153      */

154     private function log($msg) { 

155         try { 

156             $handle = fopen('transfer_log.txt', 'a'); 

157             fwrite($handle, sprintf('%s : %s'.<SPAN class=t_tag onclick=tagshow(event) href="tag.php?name=PHP">PHP</SPAN>_EOL,date('Y-m-d H:i:s'),$msg)); 

158             fclose($handle); 

159         }catch(Exception $e) { 

160             // null; 

161         } 

162     } 

163 } 

164 date_default_timezone_set('Asia/Shanghai'); 

165 error_reporting(E_STRICT); 

166 function errorHandler($errno, $errstr, $errfile, $errline) { 

167     echo '<p>error:',$errstr,'</p>'; 

168     exit(); 

169 } 

170 set_error_handler('errorHandler'); 

171 define('IS_DEBUG',true); 

172   

173 // 

174 // 

175 $filePath = '/Movie/The.Hurt.Locker.2008.x264.AC3-WAF.mkv'; 

176 $mimeType = 'audio/x-matroska'; 

177 $range = isset($_SERVER['HTTP_RANGE'])?$_SERVER['HTTP_RANGE']:null; 

178 if (IS_DEBUG) { 

179 //    $range = "bytes=1000-1999n2000"; 

180 //    $range = "bytes=1000-1999,2000";  

181 //    $range = "bytes=1000-1999,-2000";  

182 //    $range = "bytes=1000-1999,2000-2999";  

183 } 

184 set_time_limit(0); 

185 $transfer = new Transfer($filePath,$mimeType,$range); 

186 if (IS_DEBUG) { 

187     $transfer->setIsLog(true); 

188 } 

189 $transfer->send(); 

190 ?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>ajax+php 无刷新数据调用经典实例</title>
<script>
function G(id){
  return document.getElementById(id);
 }
 
 function createXMLHttpRequest(){//创建XMLHttpRequest对象
  if(window.ActiveXObject){//IE
    try {
     return new ActiveXObject("Microsoft.XMLHTTP");
    } catch(e){
     return;
    }
   }else if(window.XMLHttpRequest){//Mozilla,firefox
    try {
     return new XMLHttpRequest();
    } catch(e){
     return;
    }
   }
  }

 function returnCity(Value,divId,at,pid){//主调函数
  var xmlHttp=createXMLHttpRequest();
  var url = "s.php?cid="+Value+"&at="+at+"&pid="+pid+"&mt="+Math.random(100);
  //alert(url);
  if (Value==""){  
   return false ;
  }
  if (xmlHttp){
   callback = getReadyStateHandler(xmlHttp,divId);
   xmlHttp.onreadystatechange = callback;
   xmlHttp.open("GET", url,true);
   xmlHttp.send(null);
  }
 }

 function getReadyStateHandler(xmlHttp,divId){//服务器返回后处理函数
  return function (){
   if(xmlHttp.readyState == 4){
    if(xmlHttp.status == 200){        
      if (xmlHttp.responseText){
       G(divId).innerHTML=xmlHttp.responseText;     
      }else{
       G(divId).innerHTML="";     
      }      
    }
   }
  }
 }
 
 function ajaxData(inputName,divId,action,cpid)
 {
  //alert(inputName);
  var cityid = G(inputName).value;
  var pid = G(cpid).value;  
  returnCity(cityid,divId,action,pid);

 }
</script>
</head>

<body>
<input name="" type="text" onMouseOver="ajaxData('city_type','cityareaid','c','borough_type');" />
<div id="ajaxHtml">
</div>
</body>
</html>
//s.php文件
$Db = new Db();
  $type = ( $action=='esfPice')?1:2;  
  $sql = "Select * from cn_loupan_city_price where city_id ='$cid' and price_type='$type'";
  $query = $Db->query( $sql );
  $str ='';
  if( $Db->rows( $query ) )
  {
   $result = $Db->fetch( $query ,0);
   foreach( $result as $_v => $v )
   {
    
    $str .= "<LI><A onClick="switchprop('price2_Value','".$v['city_price_show']."','price2_List','price','".$v['city_price']."')" href="javascript教程:void(0);" target=_self>".$v['city_price_show']."</A></LI>";    
   }
   echo $str;
  }
  else
  {
   exit('可不选!');
  }  
  //这里只讲ajax不讲数据库教程连接
www.111cn.net原他

$path ="d:pdoSpiderResult.db3";
 $conn = new PDO("sqlite:$path");
 $array=array('','',''); 

 if( $conn )
 {
  //echo ('connection pdo success');
 }
 else
 {
  echo ('cnnection pdo fail ,plase check database server!');
 }
 $count=0;
 $sp = new SplitWord();
 foreach ($conn->query('SELECT * FROM content limit 160,80') as $row)
 {
  
  // baise info
  
  $softtitle = mysql教程_escape_string(mb_convert_encoding($row[3],'gbk','auto')).'-js相册';//title
  
  //file title
  
  $softcontent =  str_replace('Image/','http://g.111cn.net/javascript教程/Image/',mb_convert_encoding($row

[4],'gbk','auto'));
  
  //file size of size
  
  $softsize = '未知';
  
  // file downurl
  
  $softurl = str_replace('.zip','',$row['address']);
  $filetype='.rar';
  $softpath='http://g.111cn.net/javascript/'.$softurl.$filetype;
  $view ='<br />效果预览地址<a href=http://g.111cn.net/javascript/'.$softurl.'

target=_blank>'.$softtitle.'</a>';//效果预览地址

      preg_match_all("/(src|SRC)=["|'| ]{0,}((.*).(gif|jpg|jpeg|png|bmp))/isU",$softcontent,$img_array);
  $thum = str_replace("'",'',str_replace('"','',$img_array[2][0]));
  $softlinks = mysql_escape_string("{dede:link islocal='1' text='$localhost'}".$softpath."{/dede:link}");
  $a = strip_tags($softcontent);
  $b = $sp->SplitRMM($softtitle);
  $keywords = str_replace(' ',',',$b);
  
  $desciption = '';//desc + split word
  $introduce =$softcontent.$desciption.$view;
  $os ='Win2003,WinXP,Win2000,Win9X';
  //call out link  descript 
   
  $addsoft = "Insert into d_addonsoft(typeid,filetype,language,softtype,accredit,

os,softrank,officialUrl,officialDemo,softsize,softlinks,introduce,templet,userip,redirecturl)";
   $addsoft .=" values

('$typeid','$filetype','$language','','','$os','3','','','$softsize','".$softlinks."','$introduce','','222.103.69.94','')";

   mysql_query( $addsoft ) or die('addsoft'.$addsoft.mysql_error());//.$addsoft
   $newid = mysql_insert_id();
  
   // Read insert new id
          
   $sortrank = time();
  
   //Read the minutes and seconds when the system is currently
  
   $click = mt_rand(1000,10000);
  
   // Random Clicks 1000 , 10000 btween   
  
  
   $archives = "Insert into d_archives

(id,typeid,typeid2,sortrank,flag,ismake,channel,arcrank,click,money,title,litpic,writer,source,pubdate,senddate,mid,descripti

on,keywords)";  
   $archives.=" values

('$newid','$typeid','0','$sortrank','p','1','3','0','$click','0','$softtitle','$thum','$write','unkown','$sortrank','$sortran

k',1,'$desciption','$keywords')";
  
   mysql_query($archives) or die('archives '.$archives.'|'.mysql_error()); //$archives.
   $arctiny = "Insert into d_arctiny(id,typeid,typeid2,arcrank,channel,senddate,sortrank,mid) values

($newid,$typeid,0,0,3,'$sortrank','$sortrank',1)";
  
   mysql_query( $arctiny) or die( 'arctiny'.$arctiny.mysql_error());//$arctiny.
 
 }
 echo '总共有多条',$count,"不存地的";

本站原创转载注明来源www.111cn.net

<?php
//fsocket模拟post提交
$purl = "http://localhost/netphp/test2.php?uu=rrrrrrrrrrrr";
print_r(parse_url($url));
sock_post($purl,"uu=55555555555555555");

//fsocket模拟get提交
function sock_get($url, $query)
{
   $info = parse_url($url);
   $fp = fsockopen($info["host"], 80, $errno, $errstr, 3);
   $head = "GET ".$info['path']."?".$info["query"]." HTTP/1.0 ";
   $head .= "Host: ".$info['host']." ";
   $head .= " ";
   $write = fputs($fp, $head);
   while (!feof($fp))
   {
    $line = fread($fp,4096);
    echo $line;
   }
}
sock_post($purl,"uu=rrrrrrrrrrrrrrrr");

function sock_post($url, $query)
{
   $info = parse_url($url);
   $fp = fsockopen($info["host"], 80, $errno, $errstr, 3);
   $head = "POST ".$info['path']."?".$info["query"]." HTTP/1.0 ";
   $head .= "Host: ".$info['host']." ";
   $head .= "Referer: http://".$info['host'].$info['path']." ";
   $head .= "Content-type: application/x-www-form-urlencoded ";
   $head .= "Content-Length: ".strlen(trim($query))." ";
   $head .= " ";
   $head .= trim($query);
   $write = fputs($fp, $head);
   while (!feof($fp))
   {
    $line = fread($fp,4096);
    echo $line;
   }
}

?>