Get the book menu tree for a page, and return it as a linear array.

Parameters

$book_link: A fully loaded menu link that is part of the book hierarchy.

Return value

A linear array of menu links in the order that the links are shown in the menu, so the previous and next pages are the elements before and after the element corresponding to $node. The children of $node (if any) will come immediately after it in the array.

File

drupal-6.x/modules/book/book.module, line 513

Allows users to structure the pages of a site in a hierarchy or outline.

Code

function book_get_flat_menu($book_link) {
  static $flat = array();

  if (!isset($flat[$book_link['mlid']])) {
    // Call menu_tree_all_data() to take advantage of the menu system's caching.
    $tree = menu_tree_all_data($book_link['menu_name'], $book_link);
    $flat[$book_link['mlid']] = array();
    _book_flatten_menu($tree, $flat[$book_link['mlid']]);
  }
  return $flat[$book_link['mlid']];
}