drupal_page_header

Set HTTP headers in preparation for a page response.

Authenticated users are always given a 'no-cache' header, and will fetch a fresh page on every request. This prevents authenticated users seeing locally cached pages that show them as logged out.

See also

page_set_cache()

3 calls to drupal_page_header()

File

includes/bootstrap.inc, line 728

Functions that need to be loaded on every Drupal request.

Code

function drupal_page_header() {
  header("Expires: Sun, 19 Nov 1978 05:00:00 GMT");
  header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
  header("Cache-Control: store, no-cache, must-revalidate");
  header("Cache-Control: post-check=0, pre-check=0", FALSE);
}