Replacing a file automatically

Hi, I was looking for some way to automatically via somekind of script of whatever, I can replace a HTML file. For example having something like 20 HTML files in a folder and that at 12:00AM it takes a HTML file from that folder and overwrites the HTML file of another one, there is someway to do that?

Regards

please explain a little more to make it clear...

in the mean time check the PHP file functions (fopen, fget, fwrite...)

Hi again, thanks for your reply.

I need to replace an HTML file once a day, I have already done all the HTML files.
So, manually I just need to upload the file replacing the old one, once a day. My question was If I can automate this process uploading all the files to some folder in the site.

Regards

yes of course, but I think you have no idea how to do that?

do you have some knowledge  about PHP?

No, you're right about that :)
I asked thinking in some script already done that I can edit to make the trick, but of course, not always everything is easy :(