File search engine

[iantimmy123]

I'm making a simple programme for myself so I can upload different files then search and download specific ones at a later date.

Basically i'm just a bit stuck with a few of the principles. I'm fine with uploading the file, adding information to mysql and generating search results. However, i'm a bit stuck with what do do with the file once it is uploaded.
Do I change the filename to something more orderly e.g. a unique number or leave it (but what happens if there are 2 files with the same filename). If I do change it how can I change the filename when more than one extension is used or is there a better way to do it. I have seen a table which has the filename and extension in different columns but there was no mention of the coding used. Any help appreciated. Thanks

[Merve]

You'd probably want to make sure that each file has a unique name. If the name loses meaning to you in the renaming process, since you're using MySQL, you can attach a short description to each file.

As for separating the filename and extension: [man]explode/man

$split_name = explode(".", $filename);

[iantimmy123]

That's excellent. Thanks a lot