get lat and long, to be able to add that value to a variable of a function

I have a script in php, is it possible with your plug to add the value of lat and long to a variable?
if it is not possible I have a couple of hidden fields in a form it is possible to add the value in them and in this way send them to the script

Another question: I have a way to calculate distances between two points (through lat and long) with your plug? The latter is not a problem, I do it with a mathematical function.