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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 331340 $ -->
<refentry xml:id="function.mb-encode-mimeheader" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>mb_encode_mimeheader</refname>
<refpurpose>Encode string for MIME header</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>mb_encode_mimeheader</methodname>
<methodparam><type>string</type><parameter>str</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>charset</parameter><initializer>mb_internal_encoding()</initializer></methodparam>
<methodparam choice="opt"><type>string</type><parameter>transfer_encoding</parameter><initializer>"B"</initializer></methodparam>
<methodparam choice="opt"><type>string</type><parameter>linefeed</parameter><initializer>"\r\n"</initializer></methodparam>
<methodparam choice="opt"><type>int</type><parameter>indent</parameter><initializer>0</initializer></methodparam>
</methodsynopsis>
<para>
Encodes a given <type>string</type>
<parameter>str</parameter> by the MIME header encoding scheme.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>str</parameter></term>
<listitem>
<para>
The <type>string</type> being encoded.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>charset</parameter></term>
<listitem>
<para>
<parameter>charset</parameter> specifies the name of the character set
in which <parameter>str</parameter> is represented in. The default value
is determined by the current NLS setting (<literal>mbstring.language</literal>).
<function>mb_internal_encoding</function> should be set to same encoding.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>transfer_encoding</parameter></term>
<listitem>
<para>
<parameter>transfer_encoding</parameter> specifies the scheme of MIME
encoding. It should be either <literal>"B"</literal> (Base64) or
<literal>"Q"</literal> (Quoted-Printable). Falls back to
<literal>"B"</literal> if not given.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>linefeed</parameter></term>
<listitem>
<para>
<parameter>linefeed</parameter> specifies the EOL (end-of-line) marker
with which <function>mb_encode_mimeheader</function> performs
line-folding (a <link xlink:href="&url.rfc;2822">RFC</link> term,
the act of breaking a line longer than a certain length into multiple
lines. The length is currently hard-coded to 74 characters).
Falls back to <literal>"\r\n"</literal> (CRLF) if not given.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>indent</parameter></term>
<listitem>
<para>
Indentation of the first line (number of characters in the header
before <parameter>str</parameter>).
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
A converted version of the <type>string</type> represented in ASCII.
</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>5.0.0</entry>
<entry>
The <parameter>indent</parameter> parameter was added.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>mb_encode_mimeheader</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$name = ""; // kanji
$mbox = "kru";
$doma = "gtinn.mon";
$addr = mb_encode_mimeheader($name, "UTF-7", "Q") . " <" . $mbox . "@" . $doma . ">";
echo $addr;
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<para>
This function isn't designed to break lines at higher-level
contextual break points (word boundaries, etc.).
This behaviour may clutter up the original string with unexpected spaces.
</para>
</note>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>mb_decode_mimeheader</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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