86      * @param string $pageid page ID (needs to be resolved and cleaned)
89     public static function getAccessLevel($pageid)  argument
96         if (isset($aclcache[$pageid])) {
97             return $aclcache[$pageid];
100         $acl = auth_quickaclcheck($pageid);
101         $aclcache[$pageid] = $acl;
108      * @param string $pageid
111     public static function pageIsHidden($pageid)  argument
114         if (isset($hiddenCache[$pageid])) {
115             return $hiddenCache[$pageid];
119         $ishidden = (int) isHiddenPage($pageid);
120         $hiddenCache[$pageid] = $ishidden;
129      * @param string $pageid
132     public static function pageExists($pageid)  argument
135         if (!isset($cache[$pageid])) {
136             $cache[$pageid] = page_exists($pageid);
138         return (int)$cache[$pageid];