title: How to calculate distance between two places(Using Post Code+Google Map+PHP)?
body: <p>I want to calculate distance between two places using their post codes.I want to use Google Map API with PHP for this purpose.</p>
  
  <p>So please suggest me how can i do this or suggest a good tutorial/documentation on this and a good PHP class?</p>
  
  <p>-Thanks in advance </p>