RandIm is free and simple PHP random image rotator script. Use it to display random images from a folder of your choice. Showing a random picture on your website can be as simple as placing such code on your page:

But not only random images! RandIm supports file extension filtering so it can be used to randomly pick other file types too! You can easily set it up to work as a random file download link.

Listed in Image Galleries php scripts category