2 // prevent client from caching
3 header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
4 header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
5 header ('Cache-Control: no-cache, must-revalidate'); // HTTP/1.1
6 header ('Pragma: no-cache'); // HTTP/1.0
