fdf_open

Open a FDF document

&reftitle.description; `resource` `fdf_open` `string` `filename`

Opens a file with form data.

You can also use `fdf_open_string` to process the results of a PDF form POST request.

&reftitle.parameters;

`filename`

- Path to the FDF file. This file must contain the data as returned from a PDF form or created using `fdf_create` and `fdf_save`.

&reftitle.returnvalues;

Returns a FDF document handle, or &false; on error.

&reftitle.examples;

### Accessing the form data

    <?php
    // Save the FDF data into a temp file
    $fdffp = fopen("test.fdf", "w");
    fwrite($fdffp, $HTTP_FDF_DATA, strlen($HTTP_FDF_DATA));
    fclose($fdffp);

    // Open temp file and evaluate data
    $fdf = fdf_open("test.fdf");
    /* ... */
    fdf_close($fdf);
    ?>

&reftitle.seealso;

- `fdf_open_string`
- `fdf_close`
- `fdf_create`
- `fdf_save`