How to get geolocation data from postal code

{ // deep_execution_view
const authorName = "Ankit Agrawal";
//
const publishDate = "September 5, 2015";
<?php
$zip = "302017";
$url ="http://maps.googleapis.com/maps/api/geocode/xml?address=$zip";
$result = simplexml_load_file($url);
print_r($result);
?>
}