How to integrate Python with PHP?

What a horrible and crazy idea, mixing php and python. Why would you want to create a mess like that? Choose one or the other. Sometimes languages don't do things other languages do, but there are always ways around these sorts of limitations. Think out side the box, use substr(), trim(), etc for "backspace", write your own prepend function. Heck, just Google "prepend file" in php and you will find plenty of solutions.