<?php
require_once 'Services/GeoNames.php';

$geo =  new Services_GeoNames();
$ret = $geo->srtm3(array(
    'lat' => 42.52878,
    'lng' => -90.61625,
));
echo $ret->srtm3;

$geo1 = new Services_GeoNames();
$ret1 =  $geo1->gtopo30(array(
    'lat' => 42.52878,
    'lng' => -90.61625,
));
echo $ret1->gtopo30;
?>