<?php
 
function getCoordinates($address){
    $address = urlencode($address);
    $url = "http://maps.google.com/maps/api/geocode/json?sensor=false&address=" . $address;
    $response = file_get_contents($url);
    $json = json_decode($response,true);
 
    $lat = $json['results'][0]['geometry']['location']['lat'];
    $lng = $json['results'][0]['geometry']['location']['lng'];
 
    return array($lat, $lng);
}
 
 
$coords = getCoordinates("Wall Street, New York");
print_r($coords);
 
 
/*
Prints:
 
Array
(
    [0] => 41.3936254
    [1] => 2.1634189
)
*/