I have a simple problem, but im just starting php, so please help.

I need to have a diffrent gallery on each subpage (concept art, illustration, etc.). I got a tip that i need to create for each subpage a different file with a just the gallery, so i can refer to it on each subpage, but i don't know what code/script to put to index.php so it can connect with the gallery file.

I would be grateful if u could paste the code, because i'm kind of a hurry, but if not please give me a good tutorial. And the best would be to get both

If needed any more info i will post it right away.

There are almost endless was of doing this depending on how you want to deliver. I suggest going through php tutorials (www.w3schools.com or www.htmlgoodies.com) for learning the basics for this type of action.