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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- splitted from ./en/functions/fdf.xml, last change in rev 1.2 -->
<refentry id="function.fdf-next-field-name">
<refnamediv>
<refname>fdf_next_field_name</refname>
<refpurpose>Get the next field name</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>fdf_next_field_name</methodname>
<methodparam><type>resource</type><parameter>fdf_document</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>fieldname</parameter></methodparam>
</methodsynopsis>
<para>
The <function>fdf_next_field_name</function> function returns the
name of the field after the field in
<parameter>fieldname</parameter> or the field name of the first field
if the second parameter is &null;.
</para>
<para>
<example>
<title>Detecting all fieldnames in a FDF</title>
<programlisting role="php">
<![CDATA[
<?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";
}
?>
]]>
</programlisting>
</example>
</para>
<para>
See also <function>fdf_enum_fields</function> and
<function>fdf_get_value</function>.
</para>
</refsect1>
</refentry>
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