How to create Module that have more than 1 php file ?

[Lizard King]

I want to create just one new module with welcome block , statistic and some more modules all together. The first thing i did was to create the template but the problem i face is i cannot include more then 1 php file under the module. Is it possible what i am trying to do or nor ?
The idea is create just 1 module instead of 3-4 different modules.

[Boosted MR-S]

You could try calling the files via the php code, or write a seperate php file, that calls each.