bool fdf_set_ap    ( resource $fdf_document   , string $field_name   , int $face   , string $filename   , int $page_number   )

fdf_set_apSet the appearance of a field

fdf_document

The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().

field_name

face

The possible values FDFNormalAP, FDFRolloverAP and FDFDownAP.

filename

page_number