php-doc-en/reference/url/functions/base64-decode.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.base64-decode" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>base64_decode</refname>
  <refpurpose>Decodes data encoded with MIME base64</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>base64_decode</methodname>
   <methodparam><type>string</type><parameter>data</parameter></methodparam>
   <methodparam choice="opt"><type>bool</type><parameter>strict</parameter><initializer>false</initializer></methodparam>
  </methodsynopsis>
  <para>
   Decodes a base64 encoded <parameter>data</parameter>.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>data</parameter></term>
     <listitem>
      <para>
       The encoded data.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>strict</parameter></term>
     <listitem>
      <para>
       Returns &false; if input contains character from outside the base64
       alphabet.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the original data&return.falseforfailure;. The returned data may be
   binary.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>5.2.0</entry>
       <entry><parameter>strict</parameter> added</entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>base64_decode</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$str = 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==';
echo base64_decode($str);
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
This is an encoded string
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>base64_encode</function></member>
    <member><link xlink:href="&url.rfc;2045">RFC 2045</link> section 6.8</member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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