I need to know how to do a list of my members using php?

I need to know how to do a list of my members using php?

I want to know how to make like a php code so that I just put the short line of code on any page I want on my website and it brings up a list of all my members. I would also like to know how to do this but further filter the list to only show certain members such as "Newbies", etc.. Can anyone help please?