(PHP 4, PHP 5, PHP 7)
fdf_save — Save a FDF document
$fdf_document
[, string $filename
] )Saves a FDF document.
fdf_documentThe FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
filenameIf provided, the resulting FDF will be written in this parameter. Otherwise, this function will write the FDF to the default PHP output stream.
Returns TRUE on success or FALSE on failure.