CC电子邮件不会使用PEAR发送

我读过关于这个问题的类似帖子，但我不太清楚我在这里做错了什么。"收件人"电子邮件已收到。

但是，使用以下脚本时，我无法获得要发送的'CC'电子邮件。任何帮助都将不胜感激。

// Require Pear Mail Packages 
require_once ("Mail.php"); 
require_once ("Mail/mime.php");
require_once ("Mail/mail.php");
$crlf = "'n"; 
$from = "Company <admin@example.com>";
$to =  $purchasersName . "<" . $purchasersEmail . ">";
$cc = "Company <admin@example.com>";
$subject = "Company Order Confirmation";
$host = "localhost";
$port = "25";
$username = "the username";
$password = "the password";
$hdrs = array ('From' => $from,
'To' => $to,
'Cc' => $cc,
'Subject' => $subject);
$mime = new Mail_mime(array('eol' => $crlf));
$mime->setHTMLBody($mailBody);
$body = $mime->get();
$hdrs = $mime->headers($hdrs);
$smtp =& Mail::factory('smtp',
array ('host' => $host,
'port' => $port,
'auth' => true,
'username' => $username,
'password' => $password));
$mail = $smtp->send($to, $hdrs, $body);