function _drupal_set_preferred_header_name

7.x _drupal_set_preferred_header_name($name = NULL)
8.x _drupal_set_preferred_header_name($name = NULL)

Sets the preferred name for the HTTP header.

Header names are case-insensitive, but for maximum compatibility they should follow "common form" (see RFC 2617, section 4.2).

3 calls to _drupal_set_preferred_header_name()
drupal_add_http_header in drupal/includes/
Sets an HTTP response header for the current page.
drupal_page_set_cache in drupal/includes/
Stores the current page in the cache.
drupal_send_headers in drupal/includes/
Sends the HTTP response headers that were previously set, adding defaults.


drupal/includes/, line 1194
Functions that need to be loaded on every Drupal request.


function _drupal_set_preferred_header_name($name = NULL) {
  static $header_names = array();

  if (!isset($name)) {
    return $header_names;
  $header_names[strtolower($name)] = $name;