send mail with doc file attachment - attachment

Question

i am sending an e-mail with a doc file attachment. I am receiving the mail but with no any attachment.
PHP
$file_resume = '';
if (!empty($_FILES['attachment_file_name']['tmp_name'])) {
$file = $_FILES['attachment_file_name']['name'];
$attachment= file_get_contents($file);
$attachment= chunk_split(base64_encode($attachment));
}
$uid = md5(uniqid(time()));
$headers= "From: no-reply#edu.in"."\r\n";
$headers.= "Reply-To: no-reply#edu.in"."\r\n";
$headers.= "X-Mailer: PHP/" . phpversion()."\r\n Content-Type: multipart/mixed; boundary=\"PHP-mixed-".$uid."\"\r\n";
$headers.= "MIME-Version: 1.0" . "\r\n";
$headers.= "Content-type: text/html; charset=utf-8"."\r\n Content-Disposition: attachment; filename=\"".$attachment."\"\r\n";
$message = $_POST['person_name'];
mail($to,$subject,$message,$headers);
Html
<form id="attachment" action='mailer.php' method='POST' name="attachment" enctype="multipart/form-data">
person name: <input type="text" name="person_name" >
<br />
Attachment : <input id="attachment_file" class="field" style="height: 25px;" type="file" name="attachment_file_name" />
<input id="submit_button" type="submit" value="Send" />
</form>

Answer 1

If you're going to try to manually send an email with attachment(s), you need to get to know the underlying mail text packet that actually represents what you're constructing with the mail() arguments. Unless you comprehend and understand what's going on here, you'll struggle to ever get your email with attachment to send. There's too many sharp edges.
Gmail has a nifty feature on emails to view the original message packet, in plaintext. It's called Show Original. When testing your email script, use a Gmail account if you can so you can inspect the actual email plaintext packet. To Show Original, go to the top, left dropdown triggered by the down arrow next to the reply arrow of an email.
So sending a test email to myself with an image attached, we have what's below. Your mail call, essentially, has to translate into something more or less like this example.
Especially note how the headers start off (the top five headers below you will not handle, except maybe MIME-Version). At the end of that block, you have:
Content-Type: multipart/mixed; boundary=089e0118416874703004d86a5106
The part following the = is a message part boundary, which allows you to add multipart message blocks, including attachment file contents that have been encoded and given appropriate sub-part headers.
So there's:
--089e0118416874703004d86a5106
... message block(s) ...
--089e0118416874703004d86a5106--
There's actually another boundary declared, with:
Content-Type: multipart/alternative; boundary=089e0118416874702b04d86a5104
Which involves the text/plain and text/html dual message formats. This is not required, but many mail clients do it by nature. You can choose either text/plain or text/html, it's up to you and how your comment is formatted.
Next we see:
--089e0118416874703004d86a5106
Content-Type: image/jpeg; name="opinion (2).jpg"
Content-Disposition: attachment; filename="opinion (2).jpg"
Content-Transfer-Encoding: base64
X-Attachment-Id: f_hejlmnuz0
/9j/4AAQSkZJRgABAgAAAQABAAD/2wBDAAIEBAYIBggICAgICAgICAgKCgoKCgoKCgoKCgoKCgoK
... lots of lines for the encoded file block ...
W5R3W8ajLwrgUJEDGKWN2kWvO5iB7qdKwB6MwwfqVrQKcObveZxZBtQNCp0vc//Z
--089e0118416874703004d86a5106--
Note that the boundary's have a trailing -- at the end of their blocks (not each block).
Take a look below and compare that to the code that luk3thomas has in his answer. Try sending a very simple email message to yourself, and compare that to an attachment-formatted email:
mail('your#email.com', 'Simple mail test', 'Test message body content.');`
You should start to get the idea what's required to send emails with attachments included. The thing is, formatting an email packet for sending is very particular and little things can cause it to fail. So you have to pay attention.
MIME-Version: 1.0
Received: by 10.50.40.164 with HTTP; Thu, 21 Mar 2013 00:30:51 -0700 (PDT)
Date: Thu, 21 Mar 2013 02:30:51 -0500
Delivered-To: [redacted]#gmail.com
Message-ID: <CAKJE7RAH3+ZgN+86xykJrrzVaHK3waPD-a-OXbSDe3FGgcQrMw#mail.gmail.com>
Subject: Test of email with attachment for plaintext
From: Jared Farrish <[redacted]#gmail.com>
To: Jared Farrish <[redacted]#gmail.com>
Content-Type: multipart/mixed; boundary=089e0118416874703004d86a5106
--089e0118416874703004d86a5106
Content-Type: multipart/alternative; boundary=089e0118416874702b04d86a5104
--089e0118416874702b04d86a5104
Content-Type: text/plain; charset=UTF-8
This is the body of the email message.
--089e0118416874702b04d86a5104
Content-Type: text/html; charset=UTF-8
<div dir="ltr">This is the body of the email message.<br></div>
--089e0118416874702b04d86a5104--
--089e0118416874703004d86a5106
Content-Type: image/jpeg; name="opinion (2).jpg"
Content-Disposition: attachment; filename="opinion (2).jpg"
Content-Transfer-Encoding: base64
X-Attachment-Id: f_hejlmnuz0
/9j/4AAQSkZJRgABAgAAAQABAAD/2wBDAAIEBAYIBggICAgICAgICAgKCgoKCgoKCgoKCgoKCgoK
CgoKCgwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAz/2wBDAQIICBAQEBAQEBAgICAgIEBAQEBA
QEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQED/wgARCAEsASwDASIA
AhEBAxEB/8QAHQAAAgIDAQEBAAAAAAAAAAAABgcFCAIDBAkAAf/EABsBAAMBAQEBAQAAAAAAAAAA
[-- snip many lines of base64 file contents --]
yGrjmAV5jlw7j5RFebDQu8RG2rLa/up9x/xHOU5eppGo7lm3uDTz6w5XxBYgB7ruYJFwW/2PiD9q
XjDEturp55IeLGM36+Tlz8JY6v8AXGhta9/4Ih62UvuWHuP3DfOg/wAGFg/g0mNKnahdifSKKua+
h0likOlp+yFa2FgP0rtOReVitRTIiUuJSjw6JpN4thVyhRdZ8EE/aYzn523NZeJYu7judhllHo0g
W5R3W8ajLwrgUJEDGKWN2kWvO5iB7qdKwB6MwwfqVrQKcObveZxZBtQNCp0vc//Z
--089e0118416874703004d86a5106--

Answer 2

You'll need to add the attachment into the body of the email message. Try something like this:
$random_hash = md5(time());
$headers .= "\r\nContent-Type: multipart/alternative; boundary=\"PHP-alt-".$random_hash."\"";
$headers .= "\r\nMIME-Version 1.0";
$attachment = chunk_split(base64_encode(file_get_contents($filename)));
$message =
"--PHP-alt-$random_hash
Content-Type: text/plain
Dear Same,
We would like to thank you for your registration to be held on Saturday August 25, 2012 at the....
--PHP-alt-$random_hash
Content-Type: application/pdf; name=$filename
Content-Transfer-Encoding: base64
Content-Disposition: attachment
$attachment
--PHP-alt-$random_hash--";
#mail($to, $subject, $message, $headers);