<?xml version="1.0" encoding="utf-8"?>
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<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="function.base64-encode">
 <refnamediv>
  <refname>base64_encode</refname>
  <refpurpose>Encodes data with MIME base64</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>base64_encode</methodname>
   <methodparam><type>string</type><parameter>string</parameter></methodparam>
  </methodsynopsis>
  <para>
   Encodes the given <parameter>string</parameter> with base64.
  </para>
  <para>
   This encoding is designed to make binary data survive transport through
   transport layers that are not 8-bit clean, such as mail bodies.
  </para>
  <para>
   Base64-encoded data takes about 33% more space than the original
   data.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>string</parameter></term>
     <listitem>
      <para>
       The data to encode.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   The encoded data, as a string.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>base64_encode</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$str = 'This is an encoded string';
echo base64_encode($str);
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>base64_decode</function></member>
    <member><function>chunk_split</function></member>
    <member><function>convert_uuencode</function></member>
    <member><link xlink:href="&url.rfc;2045">RFC 2045</link> section 6.8</member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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