Slideshow Gallery with PHP and Javascript

Hi there I want to create Slideshow Gallery using PHP and Javascript.

I have a camera setup at my house that is sending picture in JPG format everytime when motion is detected.

I want to be able when I visit:

camera.example.com/

Pictures from last 3 Days to start to appear in A slideshow fast.

The structure is like this:

camera.example.com -snap (where the pictures from the camera are uploaded when motion is detected).

The pictures are in JPG format.

Please help me with this, I want to be able to view what happen on my Front yard during the past 3 days fast, without having to Open all pictures one by one.

I want them SORTED from the Newest to the Oldest.

Thank you!