Building a "self-made" compilation of php?

Hi, I know that there are severals ways to add personnal functions into php and i am looking for documentation about how to realize it. If u need a bash explication, i want to do this with php: "./configure -with-my-stuff" Additional question: is it possible to link php scripting c++ rather than c ? thank you if u are going to give me any ((relative link) or (sample codes in c or c++) or (informations)) about that ! :o) mathieu