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drupal_page_header

Definition

drupal_page_header()
drupal/includes/bootstrap.inc, line 720

Description

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 page_set_cache()

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);
}