我用IE下载的RAR文件打开要报“不可预料的压缩文件末端”的错误

mao1001

1. 
   
2. class download{
   
3.   var $debug=true;
   
4.   var $errormsg='';
   
5.   var $Filter=array();
   
6.   var $filename='';
   
7.   var $mineType='text/plain';
   
8.   var $xlq_filetype=array();
   
9. 
   
10.   function download($fileFilter='',$isdebug=true)
    
11.   {
    
12.     $this->setFilter($fileFilter);
    
13.         $this->setdebug($isdebug);        
    
14.         $this->setfiletype();
    
15.   }
    
16.   
    
17.   function setFilter($fileFilter)
    
18.   {
    
19.     if(empty($fileFilter)) return ;
    
20.         $this->Filter=explode(',',strtolower($fileFilter));
    
21.   }
    
22.   function setdebug($debug)
    
23.   {
    
24.     $this->debug=$debug;
    
25.   }
    
26.   
    
27.   function setfilename($filename)
    
28.   {
    
29.     $this->filename=$filename;
    
30.   }
    
31.   
    
32.   function downloadfile($filename)
    
33.   {
    
34.     $this->setfilename($filename);
    
35.     if($this->filecheck())
    
36.         {
    
37.           echo $fn = array_pop( explode( '/', strtr( $this->filename, '', '/' ) ) );
    
38.           header( "Pragma: public" );
    
39.         header( "Expires: 0" ); // set expiration time
    
40.         header( "Cache-Control: must-revalidate, post-check=0, pre-check=0");
    
41.         header( "Cache-Component: must-revalidate, post-check=0, pre-check=0" );
    
42.         header( "Content-type:".$this->mineType );
    
43.         header( "Content-Length: " . filesize( $this->filename ) );
    
44.         header( "Content-Disposition: attachment; filename=".$fn."");
    
45.         header( 'Content-Transfer-Encoding: binary' );
    
46.         readfile( $this->filename );
    
47.         return true;
    
48.         }else
    
49.         {
    
50.         return false;
    
51.         }
    
52.   }
    
53.   function geterrormsg()
    
54.   {
    
55.     return $this->errormsg;
    
56.   }
    
57.   
    
58.   function filecheck()
    
59.   {
    
60.     $filename=$this->filename;
    
61.         if(file_exists($filename))
    
62.         {
    
63.            $filetype=strtolower(array_pop(explode('.',$filename)));
    
64.            if(in_array($filetype,$this->Filter))
    
65.            {
    
66.              $this->errormsg.=$filename.'不允许下载！';
    
67.                  if($this->debug) exit($filename.'不允许下载！') ;
    
68.                  return false;
    
69.            }else
    
70.            {
    
71.              if ( function_exists( "mime_content_type" ) )
    
72.                  {
    
73.            $this->mineType = mime_content_type( $filename );
    
74.          }
    
75.                  if(empty($this->mineType))
    
76.                  {
    
77.                     if( isset($this->xlq_filetype[$filetype]) )  $this->mineType = $this->xlq_filetype[$filetype];
    
78.                  }
    
79.                  if(!empty($this->mineType))
    
80.                    return true;
    
81.                  else
    
82.                  {
    
83.                     $this->errormsg.='获取'.$filename.'文件类型时候发生错误，或者不存在预定文件类型内';
    
84.                         if($this->debug) exit('获取文件类型出错');
    
85.                         return false;
    
86.                  }
    
87.            }
    
88.         }else
    
89.         {
    
90.           $this->errormsg.=$filename.'不存在!';
    
91.           if($this->debug) exit($filename.'不存在!') ;
    
92.           return false;
    
93.         }
    
94.   }
    
95.   
    
96.   function setfiletype()
    
97.   {
    
98.     $this->xlq_filetype['chm']='application/octet-stream';
    
99.     $this->xlq_filetype['ppt']='application/vnd.ms-powerpoint';
    
100.     $this->xlq_filetype['xls']='application/vnd.ms-excel';
     
101.     $this->xlq_filetype['doc']='application/msword';
     
102.     $this->xlq_filetype['exe']='application/octet-stream';
     
103.     $this->xlq_filetype['rar']='application/octet-stream';
     
104.     $this->xlq_filetype['js']="javascrīpt/js";
     
105.     $this->xlq_filetype['css']="text/css";
     
106.     $this->xlq_filetype['hqx']="application/mac-binhex40";
     
107.     $this->xlq_filetype['bin']="application/octet-stream";
     
108.     $this->xlq_filetype['oda']="application/oda";
     
109.     $this->xlq_filetype['pdf']="application/pdf";
     
110.     $this->xlq_filetype['ai']="application/postsrcipt";
     
111.     $this->xlq_filetype['eps']="application/postsrcipt";
     
112.     $this->xlq_filetype['es']="application/postsrcipt";
     
113.     $this->xlq_filetype['rtf']="application/rtf";
     
114.     $this->xlq_filetype['mif']="application/x-mif";
     
115.     $this->xlq_filetype['csh']="application/x-csh";
     
116.     $this->xlq_filetype['dvi']="application/x-dvi";
     
117.     $this->xlq_filetype['hdf']="application/x-hdf";
     
118.     $this->xlq_filetype['nc']="application/x-netcdf";
     
119.     $this->xlq_filetype['cdf']="application/x-netcdf";
     
120.     $this->xlq_filetype['latex']="application/x-latex";
     
121.     $this->xlq_filetype['ts']="application/x-troll-ts";
     
122.     $this->xlq_filetype['src']="application/x-wais-source";
     
123.     $this->xlq_filetype['zip']="application/zip";
     
124.     $this->xlq_filetype['bcpio']="application/x-bcpio";
     
125.     $this->xlq_filetype['cpio']="application/x-cpio";
     
126.     $this->xlq_filetype['gtar']="application/x-gtar";
     
127.     $this->xlq_filetype['shar']="application/x-shar";
     
128.     $this->xlq_filetype['sv4cpio']="application/x-sv4cpio";
     
129.     $this->xlq_filetype['sv4crc']="application/x-sv4crc";
     
130.     $this->xlq_filetype['tar']="application/x-tar";
     
131.     $this->xlq_filetype['ustar']="application/x-ustar";
     
132.     $this->xlq_filetype['man']="application/x-troff-man";
     
133.     $this->xlq_filetype['sh']="application/x-sh";
     
134.     $this->xlq_filetype['tcl']="application/x-tcl";
     
135.     $this->xlq_filetype['tex']="application/x-tex";
     
136.     $this->xlq_filetype['texi']="application/x-texinfo";
     
137.     $this->xlq_filetype['texinfo']="application/x-texinfo";
     
138.     $this->xlq_filetype['t']="application/x-troff";
     
139.     $this->xlq_filetype['tr']="application/x-troff";
     
140.     $this->xlq_filetype['roff']="application/x-troff";
     
141.     $this->xlq_filetype['shar']="application/x-shar";
     
142.     $this->xlq_filetype['me']="application/x-troll-me";
     
143.     $this->xlq_filetype['ts']="application/x-troll-ts";
     
144.     $this->xlq_filetype['gif']="image/gif";
     
145.     $this->xlq_filetype['jpeg']="image/pjpeg";
     
146.     $this->xlq_filetype['jpg']="image/pjpeg";
     
147.     $this->xlq_filetype['jpe']="image/pjpeg";
     
148.     $this->xlq_filetype['ras']="image/x-cmu-raster";
     
149.     $this->xlq_filetype['pbm']="image/x-portable-bitmap";
     
150.     $this->xlq_filetype['ppm']="image/x-portable-pixmap";
     
151.     $this->xlq_filetype['xbm']="image/x-xbitmap";
     
152.     $this->xlq_filetype['xwd']="image/x-xwindowdump";
     
153.     $this->xlq_filetype['ief']="image/ief";
     
154.     $this->xlq_filetype['tif']="image/tiff";
     
155.     $this->xlq_filetype['tiff']="image/tiff";
     
156.     $this->xlq_filetype['pnm']="image/x-portable-anymap";
     
157.     $this->xlq_filetype['pgm']="image/x-portable-graymap";
     
158.     $this->xlq_filetype['rgb']="image/x-rgb";
     
159.     $this->xlq_filetype['xpm']="image/x-xpixmap";
     
160.     $this->xlq_filetype['txt']="text/plain";
     
161.     $this->xlq_filetype['c']="text/plain";
     
162.     $this->xlq_filetype['cc']="text/plain";
     
163.     $this->xlq_filetype['h']="text/plain";
     
164.     $this->xlq_filetype['html']="text/html";
     
165.     $this->xlq_filetype['htm']="text/html";
     
166.     $this->xlq_filetype['htl']="text/html";
     
167.     $this->xlq_filetype['rtx']="text/richtext";
     
168.     $this->xlq_filetype['etx']="text/x-setext";
     
169.     $this->xlq_filetype['tsv']="text/tab-separated-values";
     
170.     $this->xlq_filetype['mpeg']="video/mpeg";
     
171.     $this->xlq_filetype['mpg']="video/mpeg";
     
172.     $this->xlq_filetype['mpe']="video/mpeg";
     
173.     $this->xlq_filetype['avi']="video/x-msvideo";
     
174.     $this->xlq_filetype['qt']="video/quicktime";
     
175.     $this->xlq_filetype['mov']="video/quicktime";
     
176.     $this->xlq_filetype['moov']="video/quicktime";
     
177.     $this->xlq_filetype['movie']="video/x-sgi-movie";
     
178.     $this->xlq_filetype['au']="audio/basic";
     
179.     $this->xlq_filetype['snd']="audio/basic";
     
180.     $this->xlq_filetype['wav']="audio/x-wav";
     
181.     $this->xlq_filetype['aif']="audio/x-aiff";
     
182.     $this->xlq_filetype['aiff']="audio/x-aiff";
     
183.     $this->xlq_filetype['aifc']="audio/x-aiff";
     
184.     $this->xlq_filetype['swf']="application/x-shockwave-flash";
     
185.   }
     
186. }
     
187. 
     
188. 
     
189. $download=new download('php,exe',false);
     
190. if(!$download->downloadfile($desta))
     
191. {
     
192.   echo $download->geterrormsg();
     
193. }
     
194. 
     

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该文件用FTP下载没有问题