Flash Email Form - Simple Question

I was looking at a tutorial the other day for a Flash email form, it said you have to use PHPObject to make it… But then I stumbled across a similar form which just had a Flash file and a PHP file… I was wondering the difference? They both seemed to do the same thing, but using PHPObject you seem to have to use a whole heap of files… Probably a dumb question but if someone could explain would be greatly appreciated!