PHP文件上傳類型後辍名對應mine對照表

 　　使用PHP腳本上傳文件時需要將文件格式處理為PHP所認識的文件類型，例如(.jpg的文件格式為image/jpeg)。這個格式的判斷首先是由浏覽器完成的，浏覽器通過表單的提交判斷是某類文件，再提交給php進行處理。

　　有時候不同浏覽器對文件類型的定義不相同，因此有時候需要對不同的浏覽器做判斷。其實可以將不同浏覽器的類型都加入到判斷中。

　　下面提供一張IE和火狐浏覽器的文件類型對照表：

ie 火狐 id 後綴名 php識別出的文件類型 0 gif image/gif 1 jpg image/jpeg 2 png image/png 3 bmp image/bmp 4 psd application/octet-stream 5 ico image/x-icon 6 rar application/octet-stream 7 zip application/zip 8 7z application/octet-stream 9 exe application/octet-stream 10 avi video/avi 11 rmvb application/vnd.rn-realmedia-vbr 12 3gp application/octet-stream 13 flv application/octet-stream 14 mp3 audio/mpeg 15 wav audio/wav 16 krc application/octet-stream 17 lrc application/octet-stream 18 txt text/plain 19 doc application/msword 20 xls application/vnd.ms-excel 21 ppt application/vnd.ms-powerpoint 22 pdf application/pdf 23 chm application/octet-stream 24 mdb application/msaccess 25 sql application/octet-stream 26 con application/octet-stream 27 log text/plain 28 dat application/octet-stream 29 ini application/octet-stream 30 php application/octet-stream 31 html text/html 32 htm text/html 33 ttf application/octet-stream 34 fon application/octet-stream 35 js application/x-javascript 36 xml text/xml 37 dll application/octet-stream 38 dll application/octet-stream id 後綴名 php識別出的文件類型 0 gif image/gif 1 jpg image/pjpeg 2 png image/x-png 3 bmp image/bmp 4 psd application/octet-stream 5 ico image/x-icon 6 rar application/octet-stream 7 zip application/x-zip-compressed 8 7z application/octet-stream 9 exe application/octet-stream 10 avi video/avi 11 rmvb application/vnd.rn-realmedia-vbr 12 3gp application/octet-stream 13 flv application/octet-stream 14 mp3 audio/mpeg 15 wav audio/wav 16 krc application/octet-stream 17 lrc application/octet-stream 18 txt text/plain 19 doc application/msword 20 xls application/vnd.ms-excel 21 ppt application/vnd.ms-powerpoint 22 pdf application/pdf 23 chm application/octet-stream 24 mdb application/msaccess 25 sql text/plain 26 con application/octet-stream 27 log text/plain 28 dat text/plain 29 ini application/octet-stream 30 php application/octet-stream 31 html text/html 32 htm text/html 33 ttf application/octet-stream 34 fon application/octet-stream 35 js text/html 36 xml text/xml 37 dll application/octet-stream 38 class application/java

　　下面看一個實例

 代碼如下  

$temppath=$upfile['tmp_name'];
   $fileinfo=pathinfo($upfile['name']);
   $extension=$upfile['type'];
   //echo $extension;
   //exit;
   switch( $extension )
   {
    case 'application/msword':
    $extension ='doc';
    break;
    case 'application/vnd.ms-excel':
    $extension ='xls';
    break;
    case 'application/vnd.openxmlformats-officedocument.wordprocessingml.document':
    $extension ='docx';
    break;
    case 'application/vnd.ms-powerpoint':
    $extension ='ppt';
    break;
    case 'application/pdf':
    $extension ='pdf';
    break;
    case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet':
    $extension ='xlsx';
    break;
    default:
    die('只允許上傳doc,docx,xls,pdf,ppt文件 <a href="a.php">重新上傳</a>');
   
   }

　　上面實例就限制了只能上傳doc,docx,xls,pdf,ppt了，這樣如果有人想利用後綴名上傳其它如php或asp文件就存在會提示上傳文件不合法。