<?php
$location= $_POST['location_entered'];
if (!empty($location))
{
$url= 'https://maps.googleapis.com/maps/api/geocode/xml?address=' . urlencode($location);
$xmlcontent= file_get_contents($url);
$xmlload= simplexml_load_string($xmlcontent);
$zipcode= $xmlload->result->address_component[7]->long_name;
}
?>
<form action="" method="POST">
Enter the location:
<?php
echo "Zip code: $zipcode";
?>