How to attach a doc file with mail function in php

How to attach a doc file with mail function in php

I'm already trying but it's not work properly my code is.......

<?php
 
  $to = "mail@generatorsindia.org";
 
  $subject = "Quotation";
 
  $random_hash = md5(date('r', time()));
 
  $headers = "From: mail@generatorsindia.org\r\nReply-To: mail@generatorsindia.org";
 
  $headers .= "\r\nContent-Type: multipart/mixed; boundary=\"PHP-mixed-".$random_hash."\"";
 
  $attachment = chunk_split(base64_encode(file_get_contents("quotation.doc")));
 
  $output = "
--PHP-mixed-$random_hash;
Content-Type: multipart/alternative; boundary='PHP-alt-$random_hash'
--PHP-alt-$random_hash
Content-Type: text/plain; charset='iso-8859-1'
Content-Transfer-Encoding: 7bit
 
Hello World!
This is the simple text version of the email message.
 
--PHP-alt-$random_hash
Content-Type: text/html; charset='iso-8859-1'
Content-Transfer-Encoding: 7bit
 
<h2>Hello World!</h2>
<p>This is the <b>HTML</b> version of the email message.</p>
 
--PHP-alt-$random_hash--
 
--PHP-mixed-$random_hash
Content-Type: application/zip; name=geekology.zip
Content-Transfer-Encoding: base64
Content-Disposition: attachment
 
$attachment
--PHP-mixed-$random_hash--";
 ini_set("SMTP","173.244.173.138");
	ini_set("smtp_port","25");
 if (mail($to, $subject, $output, $headers)) 
	{
        echo "mail send ... OK"; // or use booleans here
    } 
	else 
	{
        echo "mail send ... ERROR!";
    }
?>

PHP:

from this script mail is send but file is not attach in mail (attachment is blank)

plz help me................
it's urgent,
thanks..............