developing with php

[Yohanes A. G. <lie...@ya...>]

i'm a newbie and i'm trying to create a site that can function like webmin 
only i'm going to use php?
is it possible to create something simillar to webmin from php?
if it is then can anyone give me any hint how can I call webmin's function 
from php?
or do i have to create my own modules under php?