Different instances for different users

[Arjhun Srinivas]

I'm quite new to web design and the languages required. I've got the file upload to work perfectly, but when I connect to my localhost server from 2 different computers, I see the files that have been uploaded from other users. Is there any way to nullify this ?

I need separate instances of the file upload to each and every person that wants to upload files onto my server. They should not be able to see files that other people have uploaded. Right now, as per my understanding, it seems to be one central service.. hence I'm able to see the files uploaded from another computer when I hit the upload link. Any one has a solution for this ?