http://blog.csdn.net/jallin2001/article/details/6872951
在PHP的手册中,有如下的方法,可以让用户方便的下载pdf或者其他类似的附件形式,不过这里居然涉及到了编码的问题,
是这样的,我要传输一个pdf附件给用户,首先是pdf文件已经存放到服务器上面了,在给文件传输过程中取名的问题,总是
在IE下面到用户端的时候,文件名是乱码,导致了文件类型无法识别,有点奇怪,文件名是UTF-8编码的,比如:“中国人.pdf”,
是从数据库中获取出来的,输出转化为$filename =
iconv('utf-8', 'gbk', $filename);,传递到用户端的时候,文件名
就正常了,这个有点稍微有点想不通。
function downloadFile( $fullPath ){
// Must
be fresh start
if( headers_sent()
)
die('Headers
Sent');
//
Required for some browsers
if(ini_get('zlib.output_compression'))
ini_set('zlib.output_compression', 'Off');
// File
Exists?
if( file_exists($fullPath)
){
// Parse
Info / Get Extension
$fsize = filesize($fullPath);
$path_parts = pathinfo($fullPath);
$ext = strtolower($path_parts["extension"]);
//
Determine Content Type
switch
($ext)
{
case "pdf": $ctype="application/pdf";
break;
case "exe": $ctype="application/octet-stream";
break;
case "zip": $ctype="application/zip";
break;
case "doc": $ctype="application/msword";
break;
case "xls": $ctype="application/vnd.ms-excel";
break;
case "ppt": $ctype="application/vnd.ms-powerpoint";
break;
case "gif": $ctype="image/gif";
break;
case "png": $ctype="image/png";
break;
case "jpeg":
case "jpg": $ctype="image/jpg";
break;
default: $ctype="application/force-download";
}
header("Pragma:
public"); //
required
header("Expires:
0");
header("Cache-Control:
must-revalidate, post-check=0, pre-check=0");
header("Cache-Control:
private",false); //
required for certain browsers
header("Content-Type:
$ctype");
header("Content-Disposition:
attachment; filename=\"".basename($fullPath)."\";" );
header("Content-Transfer-Encoding:
binary");
header("Content-Length:
".$fsize);
ob_clean();
flush();
readfile( $fullPath );
} else
die('File Not
Found');
}
原先
原先比如文件名是UTF-8的,我想通过header("Content-Type:
$ctype;charset=UTF-8");告诉服务器 采用UTF-8进行输出,
结果文件名还是乱码,下次关注下这个问题的原因。