POST files uploading - multipart/form-data + UTF bug in PHP?

Question

When I try to upload files using HTTP post with header Content-Type: multipart/form-data; boundary=-----NPRequestBoundary----- everything works as expected but trying to use Content-Type: multipart/form-data; boundary=-----NPRequestBoundary-----; charset=UTF-8 cause completely blank $_FILES array.

Is it a problem with PHP or web server? As I know this form of Content-Type is valid.

Answer 1

Bug was fixed in SVN rev. #316373 (5.3.9 release covers it).

Answer 2

I've found dirty workaround for this problem. For me it's ofc temporary bcs it doesn't work under litespeed (I used reverse proxy to apache to avoid this problem).
<Location "/upload.php">
RequestHeader set Content-Type "multipart/form-data; boundary=-----NPRequestBoundary-----"
</Location>

It will force webserver to replace content-type header. For now I'm sure - this is a PHP bug (someone assumed that charset will occur before boundary=)

Answer 3

Because the Content-Type is multipart/form-data, this means it is built up from parts, and every part can have its own Content-Type. The charset parameter is only used with text/plain content-type. So it is meanless with a multipart/form-data content-type.