Which file in the temp?
You don't know which filename PHP used untill the upload is finished.
The same goes for the filesize, you don't know what 100% is untill you know what the final size should be, and again that is not available untill the file is uploaded completely.
This has been asked a few times before, perhaps other people have found an answer to this question (which is solved if you used FTP instead of HTTP in the first place)