CakePHP's function does
$this->header(array(
'Expires' => 'Mon, 26 Jul 1997 05:00:00 GMT',
'Last-Modified' => gmdate("D, d M Y H:i:s") . " GMT",
'Cache-Control' => 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0'
));
so maybe you can make a function with:
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
and call it when needed.