PHP Array Question

1

Hmmm, I was wondering if it is possible to use a file as an array list… Im wondering this because I am thinking bout making a random image thing, like the tutorial on kirupa. But instead of putting all my file names in there and editing that file everytime, is there a way to make a .txt file or something go into it? If it doesnt make sence let me know :S Ill reword it or something… Thanks…