header('Expires: Sat, 03 Aug 2013 00:00:00 GMT'); header('Last-Modified: ' . gmdate( 'D, d M Y H:i:s') . ' GMT'); header('Cache-Control: no-store, no-cache, must-revalidate'); header('Cache-Control: post-check=0, pre-check=0', false); header('Pragma: no-cache'); ?>