title: Base 64 Attachment in PHP Mail() not working
body: <p><a href="https://i.imgur.com/BAYAmXW.png" rel="nofollow noreferrer"><img src="https://i.imgur.com/BAYAmXW.png" alt="enter image description here"></a></p>
  
  <p>I got a script which sends out an automated email when a function runs. I want to be able to send the HTML email along with a PDF attachment. I know I need to encode the file in to Base64 however I am just getting base64 code attached to the bottom of my email. I assume it's something to do with the mime stuff. Anyone see the issue?</p>
  
  <pre><code>    $to = 'example@example.com';
  
      $subject = 'test!';
  
      $file = file_get_contents("files/CAPS-Standing-Order.pdf");
      $encoded_file = chunk_split(base64_encode($file));
  
      // message
      $boundary = md5("sanwebe");
  
      $message = 'Hello';
  
      // To send HTML mail, the Content-type header must be set
      $headers  = 'MIME-Version: 1.0' . "\r\n";
      $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
  
      // Additional headers
      $headers .= 'From: CAPS Consortium &lt;contact@capsconsortium.com&gt;' . "\r\n";
  
      $message .= "--$boundary\r\n";
      $message .="Content-Type: pdf; name=\"CAPS-Standing-Order.pdf\"\r\n";
      $message .="Content-Disposition: attachment; filename=\"CAPS-Standing-Order.pdf\"\r\n";
      $message .="Content-Transfer-Encoding: base64\r\n";
      $message .="X-Attachment-Id: ".rand(1000,99999)."\r\n\r\n";
      $message .= $encoded_file; 
  
      // Mail it
      mail($to, $subject, $message, $headers);
  </code></pre>