<?php
header('Expires: Sat, 11 Sept 2003 09:43:00 GMT');
header('Last-Modified: ' . gmdate ('D, d M Y H:i:s') . ' GMT');
header('Cache-Control: no-cache, must-revalidate');
header('Pragma: no-cache');
header('Content-Type: application/json; charset=UTF-8;');
sleep(3);
echo json_encode(array(
'item_1' => 'Item 1 value',
'item_2' => 'Item 2 value',
'item_3' => 'Item 3 value'
));
?>