- header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
- header("Cache-Control: max-age=" . (3600*24));
+
+ if($prvcachecontrol) {
+
+ // it is a private photo that they have no permission to view.
+ // tell the browser not to cache it, in case they authenticate
+ // and subsequently have permission to see it
+
+ header("Cache-Control: no-store, no-cache, must-revalidate");
+
+ }
+ else {
+
+ header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
+ header("Cache-Control: max-age=" . (3600*24));
+
+ }