[PHP] running scripts

I am sure this has been asked dozens of times so please forgive if this is repetitive. I have an application from which I would like to incorporate running scripts. I saw that I can pass files to php.exe but this is more for a batch process and so my application wouldn't have access to any script

[PHP] sapi/embed -- how to?

Just came across sapi/embed and am now looking into that direction for incorporating scripting support from my C/C++ application. Does anyone know where I can find the API docs for the zend_ functions? I can't seem to find them online. What I want to accomplish is: 1. set my 'C' variables in th