2 very simple php tasks

I already have a script fully made, I am just in need of someone to make 2 small adjustments to it. The script: I can supply the script in PMB if you think you are able to take on this project. It has no database, it looks into a specified folder and displays all the images inside the folder in a gallery page. It is very basic. Task 1: Currently the script displays images oldest to newest. I just want it adjusted to displayed newest first. Newest to oldest. Task 2: I would like the script to display all images within any folders inside the specified folder too. For example: Currently it will only display images inside /folder/images/ I would like it to display any images that are located within /folder/images/new_folder but without having to specify these subfolders, it should detect folders within the main folder and display any images within those too. If it comes across an image with a duplicate file name, it should only display one image only, not both. I will send you the script. What I would like is the script sent back first with just task 1. Then a secondly with task 1 and also task 2 completed. So I have both versions. That is all. Thanks.