Need a file uploader and browser

[bohboh]

I need a simple script that i can plugin to a cms.

It needs to be able to:

1. Upload file(s)
2. Allow users to create directories. This will NOT create the directories on the system. It instead needs to create the relationship in the database. The files will all exist on one level in an upload folder.
3. Browse all files in a tree folder like structure which is built using the relationship between the records in the database.
4. Have file preview / edit / delete

Does anyone know of one that can do all this?

The ones i have found all physically create the folders which is no good to me.

[_Steve_]

What type of files can they upload? This is very risky.

[bohboh]

Yep, forgot to mention, need to be able to restrict file types.

The users are trusted therefore doesn't require much security.