<?php

// Prevent caching.
header('Cache-Control: no-cache, must-revalidate');
header('Expires: Mon, 01 Jan 1996 00:00:00 GMT');

// The JSON standard MIME header.
header('Content-Type: application/json; charset=UTF-8');

$id = $_GET['id'];

$data = array('Hello' => $id, 'There'=> $id);

echo json_encode($data);

?>