Hmm... I'm unable to find any FTP classes that do not use th ftp functions in PHP.
I could write a quick one to download/upload files using just sockets, but I may not have much time this week :-)
What do you plan to use the FTP for? downloading files?
If you are running linux, you can use wget or curl to upload download FTP files. It's very easy to compile and use from system() or exec().
Let me know what you plan to use FTP for and I can give you a sample usage of wget or curl along with a simple PHP code which calls this command.
Oh: there is wget for Windows as well (binary, no need to compile). So if you're on win, let me know so I can modify the program call a tiny bit.
-sridhar