The fdf_open_string() function
reads form data from a string.
fdf_data must contain the data as returned from a
PDF form or created using
fdf_create() and
fdf_save_string().
You can fdf_open_string()
together with $HTTP_FDF_DATA to
process fdf form input from a remote client.
See also fdf_open(),
fdf_close(), fdf_create() and
fdf_save_string().