/**
* returns the sections of a page
*
* to get all sections of all pages, leave param empty
*
* @access public
* @param integer $page_id
* @return array
**/
public static function getSections($page_id = NULL)
{
if (!count(self::$pages)) {
self::getInstance();
}
if (!count(self::$pages_sections)) {
self::$pages_sections = CAT_Sections::getActiveSections();
}
if ($page_id) {
return isset(self::$pages_sections[$page_id]) ? self::$pages_sections[$page_id] : array();
} else {
return self::$pages_sections;
}
}