PHP Email for other languages

I am trying to convert email into UTF-8 and using below function.

### FOR EMAIL
function imap8bit(&$item, $key) {
$item = imap_8bit($item);
}

function email($e_mail, $subject, $message, $headers)
{
// add headers for utf-8 message
$headers .= "\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/plain; charset=utf-8\r\n";
$headers .= "Content-Transfer-Encoding: quoted-printable\r\n";

// encode subject
//=?UTF-8?Q?encoded_text?=

// work a round: for subject with wordwrap
// not fixed, no possibility to have one in a single char
$subject = wordwrap($subject, 25, "\n", FALSE);
$subject = explode("\n", $subject);
array_walk($subject, imap8bit);
$subject = implode("\r\n ", $subject);
$subject = "=?UTF-8?Q?".$subject."?=";
$subject = "=?UTF-8?B?" . base64_encode($subject) . "?=";

// encode e-mail message
$message = imap_8bit($message);

return(mail("$e_mail", "$subject", "$message", "$headers"));
}
### FOR EMAIL

everything is working correctly. but subject shows

values like =D8=B9=D9=84=D9=89 =D8=A3=D8=AC=D9=88=D8=A7=D8=A1 =D8=B4=D9=88=D8=A7=D8=B7=D8=A6

Please help

Post If any other function works.

 

it is because of the array_walk
what do you want with your subject?