(PHP 4, PHP 5 < 5.3.0, PECL fdf SVN)
fdf_set_file — Set PDF document to display FDF data in
fdf_set_file ( resource $fdf_document , string $url [, string $target_frame ] ) : bool
Selects a different PDF document to display the form results in then the form it originated from.
fdf_document
The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
url
Should be given as an absolute URL.
target_frame
Use this parameter to specify the frame in which the document will be displayed. You can also set the default value for this parameter using fdf_set_target_frame().
Returns true on success or false on failure.
Example #1 Passing FDF data to a second form
<?php /* set content type for Adobe FDF */ fdf_header(); /* start new fdf */ $fdf = fdf_create(); /* set field "foo" to value "bar" */ fdf_set_value($fdf, "foo", "bar"); /* tell client to display FDF data using "fdf_form.pdf" */ fdf_set_file($fdf, "http://www.example.com/fdf_form.pdf"); /* output fdf */ fdf_save($fdf); /* clean up */ fdf_close($fdf); ?>
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https://www.php.net/manual/en/function.fdf-set-file.php