Road distance,Actual distance between two places

Question

I want to calculate the driving distance between two locations [the user\'s specified locations], before user starts the driving. I used many formulas and getDistanceFrom in

Answer 1

See directions API of Google Maps

You have just to make a HTTP request:
http://maps.googleapis.com/maps/api/directions/output?parameters

Answer could be json or xml. You will find the distance in the answer