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  <refentry id="function.chunk-split">
   <refnamediv>
    <refname>chunk_split</refname>
    <refpurpose>Split a string into smaller chunks</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>string</type><methodname>chunk_split</methodname>
      <methodparam><type>string</type><parameter>body</parameter></methodparam>
      <methodparam choice="opt"><type>int</type><parameter>chunklen</parameter></methodparam>
      <methodparam choice="opt"><type>string</type><parameter>end</parameter></methodparam>
     </methodsynopsis>
    <para>
     Can be used to split a string into smaller chunks which is useful for
     e.g. converting <link
     linkend="function.base64-encode">base64_encode</link> output to match RFC
     2045 semantics. It inserts <parameter>end</parameter> (defaults to
     "\r\n") every <parameter>chunklen</parameter> characters (defaults to
     76). It returns the new string leaving the original string untouched.
     <example>
      <title><function>chunk_split</function> example</title>
      <programlisting role="php">
<![CDATA[
# format $data using RFC 2045 semantics

$new_string = chunk_split(base64_encode($data));
]]>
      </programlisting>
     </example>
    </para>
    <simpara>
     See also <function>explode</function>, <function>split</function> 
     <function>wordwrap</function> and
     <ulink url="&url.rfc;rfc2045.html">RFC 2045</ulink>.
    </simpara>
   </refsect1>
  </refentry>

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