php获得上传文件扩展名

php判断常用上传文件类型，自动获取文件扩展名

星期四, 三月 29th, 2012 | php | 没有评论

在用php进行文件上传的时候总要判断文件的扩展名名等进行是否允许操作，经测试记录比较常用的文件类型，
记录如下，如有不全，希望能补正修改，代码如下：

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switch    ($_FILES['userupfile']['type'])   
   {     
   case    "image/jpeg":     
   $fileextname    =    "jpg";     
   break;  
    case    "image/pjpeg":     
   $fileextname    =    "jpg";     
   break;    
   case    "image/gif":     
   $fileextname    =    "gif";     
   break;     
   case    "image/png":     
   $fileextname    =    "png";     
   break; 
   case    "image/x-png":     
   $fileextname    =    "png";     
   break; 
    case    "image/bmp":     
   $fileextname    =    "bmp";     
   break;    
   case    "application/x-shockwave-flash":     
   $fileextname    =    "swf";     
   break;     
   case    "text/plain":     
   $fileextname    =    "txt";     
   break;     
   case    "application/msword":     
   $fileextname    =    "doc";     
   break;     
   case    "application/x-zip-compressed":     
   $fileextname    =    "zip";     
   break; 
   case    "application/vnd.ms-excel":     
   $fileextname    =    "xls";     
   break; 
   case    "application/vnd.openxmlformats-officedocument.wordprocessingml.document":     
   $fileextname    =    "docx";     
   break; 
   case    "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet":     
   $fileextname    =    "xlsx";     
   break; 
   case    "application/pdf":     
   $fileextname    =    "pdf";     
   break;   
 
   }

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