<?php
//header('Content-Type: text/xml');
header('Cache-control: no-cache');
header('Pragma: no-cache');
header('Expires: -1');

$data = Array (
  "one" => "Some information about item 1 (could be from a database query)",
  "two" => "Some information about item 2 (could be from a database query)",
  "three" => "Some information about item 3 (could be from a database query)"
);  

$num = $_GET['param'];
echo $data[$num];
?>