Easiest way to store a value in an external file?

Question

I need a number, for a game, that decrements every time a function is called. so that any time that function is ever called, by clicking a link and running code.php, that variable is written and then decremented the next time the link is clicked. help?

Answer 1

Make a static variable and put the decrement on the constructor of the object/function, this way every time the variable has decrement. U can't put this in a db or a text file

Answer 2

$_POST['You_Value']