©
                    本文档使用
                    php中文网手册 发布
                
(PHP 4, PHP 5, PHP 7)
fdf_open — Open a FDF document
$filename 
   )Opens a file with form data.
You can also use fdf_open_string() to process the results of a PDF form POST request.
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() .
   Returns a FDF document handle, or  FALSE  on error.
  
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 );
 ?>