For use with Wufoo WebHook

SendEmailwFileAttachment.php

<?php

	// NOTE: it's best practice to CLEAN YOUR INPUTS
	// http://www.acunetix.com/websitesecurity/php-security-1.htm

	function mail_attachment($filename, $path, $mailto, $from_mail, $from_name, $replyto, $subject, $message) {
	
	    $file = $path.$filename;
	    $file_size = filesize($file);
	    $handle = fopen($file, "r");
	    $content = fread($handle, $file_size);
	    fclose($handle);
	    $content = chunk_split(base64_encode($content));
	    
	    $uid = md5(uniqid(time()));
	    
	    $header = "From: ".$from_name." <".$from_mail.">\r\n";
	    $header .= "Reply-To: ".$replyto."\r\n";
	    $header .= "MIME-Version: 1.0\r\n";
	    $header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
	    $header .= "This is a multi-part message in MIME format.\r\n";
	    $header .= "--".$uid."\r\n";
	    $header .= "Content-type:text/plain; charset=iso-8859-1\r\n";
	    $header .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
	    $header .= $message."\r\n\r\n";
	    $header .= "--".$uid."\r\n";
	    $header .= "Content-Type: application/octet-stream; name=\"".$filename."\"\r\n";
	    $header .= "Content-Transfer-Encoding: base64\r\n";
	    $header .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n";
	    $header .= $content."\r\n\r\n";
	    $header .= "--".$uid."--";
	    
	    // Messages for testing only, nobody will see them unless this script URL is visited manually
	    if (mail($mailto, $subject, "", $header)) {
	        echo "Message sent!";
	    } else {
	        echo "ERROR sending message.";
	    }
	    
	}
		
	// Only accept POSTs from authenticated source
	if ($_POST['HandshakeKey'] != 'secret-handshake-key') {
	  echo "<h1>You are not who you say you are, mister man.</h1>";
		die();
	}
	
	
	
	// EDIT FROM HERE DOWN TO 
	// CUSTOMIZE EMAIL
	
	
	
	// File to attach
	$my_file = "whitepaper.doc";
	$my_path = ''; // $_SERVER['DOCUMENT_ROOT']."/your_path_here/";
	
	// Who email is FROM
	$my_name    = "Your Name (or) Your Business";
	$my_mail    = "youremail@yourbusiness.com";
	$my_replyto = "youremail@yourbusiness.com";
	
	// Whe email is going TO
	$to_email   = $_POST['Field103']; // Comes from Wufoo WebHook
	
	// Subject line of email
	$my_subject = "Your file has arrived!";
	
	// Content of email message (Text only)
	$requester   = $_POST['Field101'];  // Comes from Wufoo WebHook
	$message     = "Hey $requester,
	
Your custom email message
goes here";
	
	// Call function to send email
	mail_attachment($my_file, $my_path, $to_email, $my_mail, $my_name, $my_replyto, $my_subject, $message);

?>

I'm getting the following error in the Notification log and not receive the email

(411) Length Required Length Required HTTP Error 411. The request must be chunked or have a content length.