public static function SetCategoryId($cat_id) { if ($cat_id < 0) { WoW_Log::WriteError('%s : wrong category ID (%d), unable to handle.', __METHOD__, $cat_id); return false; } if (!DB::WoW()->selectCell("SELECT 1 FROM `DBPREFIX_forum_category` WHERE `cat_id` = %d", $cat_id)) { return false; } self::$active_category_id = $cat_id; return true; }