Highscores on Flash 8 and PHP

I need a working PHP system in flash which updates highscores in a game when you submit them.
I have the variable ‘score’ and ‘user’ which are what get submited, can you help?

I know that I can use Mochi-ads to make a highscore system - but I can’t work out how to put it together so if you have a working example of a mochi-ads game in .fla format please give it here