   #PHP Manual Forms Data Format functions fdf_header fdf_open_string

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                              fdf_next_field_name

   (PHP 3>= 3.0.6, PHP 4 )
   fdf_next_field_name -- Get the next field name

Description

   string fdf_next_field_name ( resource fdf_document [, string
   fieldname])

   The fdf_next_field_name() function returns the name of the field after
   the field in fieldname or the field name of the first field if the
   second parameter is NULL.

   Example 1. Detecting all fieldnames in a FDF
   <?php
     $fdf = fdf_open($HTTP_FDF_DATA);
     for ($field = fdf_next_field_name($fdf);
        $field != "";
        $field = fdf_next_field_name($fdf, $field)) {
       echo "field: $field\n";
     }
   ?>

   See also fdf_enum_fields() and fdf_get_value().
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