php-doc-en/reference/fdf/functions/fdf-open-string.xml

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<refentry id="function.fdf-open-string">
 <refnamediv>
  <refname>fdf_open_string</refname>
  <refpurpose>Read a FDF document from a string</refpurpose>
 </refnamediv>
 <refsect1>
  <title>Description</title>
  <methodsynopsis>
   <type>resource</type><methodname>fdf_open_string</methodname>
   <methodparam><type>string</type><parameter>fdf_data</parameter></methodparam>
  </methodsynopsis>
  <para>
   The <function>fdf_open_string</function> function reads form data 
   from a string. <parameter>fdf_data</parameter> must contain the data 
   as returned from a PDF form or created using <function>fdf_create</function> 
   and <function>fdf_save_string</function>. 
  </para>
  <para>
   You can <function>fdf_open_string</function> together with
   <varname>$HTTP_FDF_DATA</varname> to process fdf form input
   from a remote client.
  </para>
  <para>
   <example>
    <title>Accessing the form data</title>
    <programlisting>
<![CDATA[
<?php
$fdf = fdf_open_string($HTTP_FDF_DATA);
...
fdf_close($fdf);
?>
]]>
    </programlisting>
   </example>
  </para>
  <para>
   See also 
   <function>fdf_open</function>,
   <function>fdf_close</function>,
   <function>fdf_create</function> and
   <function>fdf_save_string</function>.
  </para>
 </refsect1>
</refentry>

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