file type test? ...i forgot how to do it.

[[email protected]]

i forgot the code for testing file types. like they turn out like: "application/octet-stream" ...etc. i have a upload script and i need to ban certain file types...what is that testing code?

and if u need it, here is my upload script:
[url=http://csscobalt.com/file_type_test.txt]http://csscobalt.com/file_type_test.txt[/url]

[JayBachatero]

It's "$_FILES['userfile']['type']" but it seems like you already have that in your script.