php-doc-en/reference/mbstring/functions/mb-internal-encoding.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.mb-internal-encoding" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>mb_internal_encoding</refname>
  <refpurpose>Set/Get internal character encoding</refpurpose>
 </refnamediv>
   
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>mixed</type><methodname>mb_internal_encoding</methodname>
   <methodparam choice="opt"><type>string</type><parameter>encoding</parameter><initializer>mb_internal_encoding()</initializer></methodparam>
  </methodsynopsis>
  <para>
   Set/Get the internal character encoding
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>encoding</parameter></term>
     <listitem>
      <para>
       <parameter>encoding</parameter> is the character encoding name 
       used for the HTTP input character encoding conversion, HTTP output 
       character encoding conversion, and the default character encoding 
       for string functions defined by the mbstring module.
       You should notice that the internal encoding is totally different from the one for multibyte regex.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   If <parameter>encoding</parameter> is set, then 
   &return.success;
   In this case, the character encoding for multibyte regex is NOT changed.
   If <parameter>encoding</parameter> is omitted, then 
   the current character encoding name is returned.
  </para>
 </refsect1>
 
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>mb_internal_encoding</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
/* Set internal character encoding to UTF-8 */
mb_internal_encoding("UTF-8");

/* Display current internal character encoding */
echo mb_internal_encoding();
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <!--
 <refsect1 role="notes">
  &reftitle.notes;
  
 </refsect1>
 -->

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>mb_http_input</function></member>
    <member><function>mb_http_output</function></member>
    <member><function>mb_detect_order</function></member>
    <member><function>mb_regex_encoding</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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