# fdf_set_file

(PHP 4, PHP 5, PHP 7)

fdf_set_file — Set PDF document to display FDF data in

### 说明

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.

### 参数

`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().

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

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);
    ?>

### 参见

- fdf_get_file() - Get the value of the /F key
- fdf_set_target_frame() - Set target frame for form display