Embedding, threads and execution of PHP

Hi again! So, I'm not so experienced... But, what can I do with next situation: we have compiled script, we would like to execute a function from that script in another thread (while parent is working). So, I need the clone of compiled and executed parent script. Or, I'm not correct? I'm using zend_compile_file and zend_execute. But zend_execute executes the script once again, I do not like it (there are many echo and printf, for example, also, data, that is not required). What am I to do?