(PHP 4 >= 4.3.0, PHP 5)
fdf_get_attachment — Extracts uploaded file embedded in the FDF
Extracts a file uploaded by means of the "file selection" field fieldname and stores it under savepath .
The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
May be the name of a plain file or an existing directory in which the file is to be created under its original name. Any existing file under the same name will be overwritten.
Note: There seems to be no other way to find out the original filename but to store the file using a directory as savepath and check for the basename it was stored under.
The returned array contains the following fields:
Example #1 Storing an uploaded file
<?php
$fdf = fdf_open_string($HTTP_FDF_DATA);
$data = fdf_get_attachment($fdf, "filename", "/tmpdir");
echo "The uploaded file is stored in $data[path]";
?>