There seems to be a problem when getting uploaded file's mime-type. The problem occurs only with Opera.

The file is uploaded correctly, and then I try to check the uploaded file's mime-type.

$userfile_type gives:
image/gif; name=\"logo3.gif\"

It should be of cource only "image/gif". And the name should be reported only in $userfile_name, not in $userfile_type.

So I'll have to write a correction to every my scripts involved with file-uploads.

Correction I have made:
list ($userfile_type) = split(";", $userfile_type);

I have made an example page for uploading images, which is in the address:
http://ihastus.net/phpbug/