+
+ // Used later
+ $now = gmdate('D, d M Y H:i:s') . ' GMT';
+
+ // General header for no caching
+ header('Expires: ' . $now); // rfc2616 - Section 14.21
+ header('Last-Modified: ' . $now);
+ header('Cache-Control: no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0'); // HTTP/1.1
+ header('Pragma: no-cache'); // HTTP/1.0
+
+ // whether to show html header?
+ if ($action != 'download') {
+
+ // Define the charset to be used
+ header('Content-Type: text/html; charset=utf-8');
+