title: Get ZIP codes of particular country using google map
body: <p>I am using maps.googleapis.com/maps/api in codeigniter to display auto complete location when user types zip address. I have two input field from first user will select country and in second filed he will type his zip code and from google autocomplete he will select his address.</p>
  
  <pre><code>    var directionsService = new google.maps.DirectionsService();
          google.maps.event.addDomListener(window, 'load', function () {
          new google.maps.places.SearchBox(document.getElementById('zip'));
          directionsDisplay = new google.maps.DirectionsRenderer({ 'draggable': true });
      });
  </code></pre>
  
  <p>It is working fine but now I want to show zip codes only from selected country. Means if user select Australia as country and type zip like 2127 then google api should show addresses in Australia having 2127 in address</p>