(PHP 4, PHP 5)
fdf_set_status — Set the value of the /STATUS key
Sets the value of the /STATUS key. When a client receives a FDF with a status set it will present the value in an alert box.
The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
成功时返回 TRUE, 或者在失败时返回 FALSE.