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# fdf_open

(PHP 3>= 3.0.6, PHP 4 )

fdf_open -- Open a FDF document

## Description

resource fdf_open ( string filename)

The fdf_open() function opens a file with form data. This file must contain the data as returned from a PDF form or created using fdf_create() and fdf_save().

You can process the results of a PDF form POST request by writing the data recieved in `$HTTP_FDF_DATA` to a file and open it using fdf_open(). Starting with PHP 4.3 you can also use fdf_open_string() which handles temporary file creation and cleanup for you.

Example 1. 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);
    ?>

See also fdf_open_string(), fdf_close(), fdf_create() and fdf_save().

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