(PHP 4, PHP 5 < 5.3.0, PECL fdf SVN)
fdf_get_file — Get the value of the /F key
$fdf_document
Gets the value of the /F key.
/F
fdf_document
The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
Returns the key value, as a string.