/** * Returns an array containing, for each field, the arary key used for that * field in self::$_fields. * * @return array */ static function &fieldKeys() { if (!self::$_fieldKeys) { self::$_fieldKeys = array('id' => 'id', 'name' => 'name', 'label' => 'label', 'description' => 'description', 'image_URL' => 'image_URL', 'parent_id' => 'parent_id', 'is_active' => 'is_active', 'is_reserved' => 'is_reserved'); } return self::$_fieldKeys; }