Отправка pdf на mail

<?php
 
include("MPDF57/mpdf.php"); //Include mPDF Class 
 
$mpdf = new mPDF('utf-8', 'A4', '8', '', 10, 10, 7, 7, 10, 10); /*задаем формат, отступы и.т.д.*/
 
//Beginning Buffer to save PHP variables and HTML tags
ob_start(); 
 
// Function Date
$day = date('d');
$month = date('m');
$year = date('Y');
 
switch ($month)
{ 
case 1: $month = "January"; break;
case 2: $month = "February"; break;
case 3: $month = "March"; break;
case 4: $month = "April"; break;
case 5: $month = "May"; break;
case 6: $month = "June"; break;
case 7: $month = "July"; break;
case 8: $month = "August"; break;
case 9: $month = "September"; break;
case 10: $month = "October"; break;
case 11: $month = "November"; break;
case 12: $month = "December"; break;
}
 
echo "<p style='font-family:Arial;'><a href=''>Привет</a> World
Today is $month $day, $year</p>";
 
$html = ob_get_contents();
ob_end_clean();
//Here convert the encode for UTF-8, if you prefer the ISO-8859-1 just change for $mpdf->WriteHTML($html);
$mpdf->charset_in = 'utf-8'; /*не забываем про русский*/
 
$mpdf->list_indent_first_level = 0;
$content = $mpdf->WriteHTML(utf8_encode($html)); 
 
$content = $mpdf->Output('', 'S');
 
$content = chunk_split(base64_encode($content));
$mailto = 'test@mail.ru'; //Mailto here
$from_name = 'ACME Corps Ltd'; //Name of sender mail
$from_mail = 'mailfrom@mailfrom.com'; //Mailfrom here
$subject = 'subjecthere'; 
$message = 'mailmessage';
$filename = "yourfilename.pdf"; //Your Filename whit local date and time
 
//Headers of PDF and e-mail
$boundary = "XYZ-" . date("dmYis") . "-ZYX"; 
 
$header = "--$boundary\r\n"; 
$header .= "Content-Transfer-Encoding: 8bits\r\n"; 
$header .= "Content-Type: text/html; charset=utf-8\r\n\r\n"; //plain 
$header .= "$message\r\n";
$header .= "--$boundary\r\n";
$header .= "Content-Type: application/pdf; name=\"".$filename."\"\r\n";
$header .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n";
$header .= "Content-Transfer-Encoding: base64\r\n\r\n";
$header .= "$content\r\n"; 
$header .= "--$boundary--\r\n";
 
$header2 = "MIME-Version: 1.0\r\n";
$header2 .= "From: ".$from_name." \r\n"; 
$header2 .= "Return-Path: $from_mail\r\n";
$header2 .= "Content-type: multipart/mixed; boundary=\"$boundary\"\r\n";
$header2 .= "$boundary\r\n";
 
mail($mailto,$subject,$header,$header2, "-r".$from_mail);
 
$mpdf->Output($filename ,'I');
exit;
 
?>

header('Content-Type: text/html; charset=utf-8');

$content = $mpdf->WriteHTML(utf8_encode($a));

$mailer = Swift_Mailer::newInstance($transport);
$message = Swift_Message::newInstance('Wonderful Subject')
  ->setFrom(array('john@doe.com' => 'John Doe'))
  ->setTo(array('receiver@domain.org', 'other@domain.org' => 'A name'))
  ->setBody('Here is the message itself');
$result = $mailer->send($message);