/** * 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::$_fieldKeys = array('id' => 'id', 'name' => 'name', 'description' => 'description', 'start' => 'start', 'end' => 'end', 'date_format' => 'date_format', 'time_format' => 'time_format'); } return self::$_fieldKeys; }