repo_zf1/documentation/manual/en/module_specs/Zend_Mail-Boundary.xml

<?xml version="1.0" encoding="UTF-8"?>
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<sect1 id="zend.mail.boundary">
    <title>Controlling the MIME Boundary</title>
    <para>
        In a multipart message, a <acronym>MIME</acronym> boundary for separating the different parts of the message is normally
        generated at random. In some cases, however, you might want to specify the <acronym>MIME</acronym> boundary that is used.
        This can be done using the <methodname>setMimeBoundary()</methodname> method, as in the following example:
    </para>
    <example id="zend.mail.boundary.example-1">
        <title>Changing the MIME Boundary</title>
        <programlisting language="php"><![CDATA[
$mail = new Zend_Mail();
$mail->setMimeBoundary('=_' . md5(microtime(1) . $someId++));
// build message...
]]></programlisting>
    </example>
</sect1>
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