Get Latitude Longitude using Area Zip in PHP

<?php

function getLnt($zip){
$url = "http://maps.googleapis.com/maps/api/geocode/json?address=
".urlencode($zip)."&sensor=false";
$result_string = file_get_contents($url);
$result = json_decode($result_string, true);
$result1[]=$result['results'][0];
$result2[]=$result1[0]['geometry'];
$result3[]=$result2[0]['location'];
return $result3[0];
}

$val = getLnt($zip);
echo "Latitude: ".$val['lat']."<br>";
echo "Longitude: ".$val['lng']."<br>";

?>