$this->body .= "Content-Transfer-Encoding: base64\n";
$this->body .= "Content-Disposition: attachment; filename=\"".$filename."\"\n\n";
$this->body .= chunk_split(base64_encode($file),"72","\n");
$this->body .= "Content-Transfer-Encoding: base64\n";
$this->body .= "Content-Disposition: attachment; filename=\"".$filename."\"\n\n";
$this->body .= chunk_split(base64_encode($file),"72","\n");