fdf_next_field_name

Get the next field name (PHP 3 >= 3.0.6, PHP 4, PHP 5)
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.

例 544. 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().