(PHP 3 >= 3.0.6, PHP 4, PHP 5)
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_get_value().