public function __construct($content = '', $filename = null, $content_type = 'application/octet-stream', $encoding = 'base64')
{
parent::__construct($content, $content_type, $encoding);
$options = array();
if ($filename !== null) $options['name'] = $filename;
$this->set_content_type($content_type, $options);
$this->set_content_disposition($filename);
}
public function add_embedded_image($content, $content_id, $filename = null, $content_type = 'application/octet-stream', $encoding = 'base64')
{
$content = new SMimePart($content, $content_type, $encoding);
if ($filename !== null) $content->set_content_type($content_type, array('name' => $filename));
$content->set_header('Content-ID', '<'.$content_id.'>');
if ($this->is_multipart() && $this->content->get_subtype() == SMimeMultipart::RELATED)
$this->content->add_part($content);
else
$this->set_content(new SMimeMultipart(SMimeMultipart::RELATED, array($this->content, $content)));
}
