How to embed images in html email

Question

I\'m trying to implement a code to send HTML email with embedded image.

I already tried for simple HTML email with image but this image is taken from server.

Answer 1

I'm using this function that find all images in my letter and attaches it to the message.

Parameters: Takes your HTML (which you want to send);
Return: The necessary HTML and headers, which you can use in mail();

Example usage:

define("DEFCALLBACKMAIL", "yourmail@yourdomain.com"); // WIll be shown as "from".
$final_msg = preparehtmlmail($html); // give a function your html*

mail('your@mail.com', 'your subject', $final_msg['multipart'], $final_msg['headers']); 
// send email with all images from html attached to letter


function preparehtmlmail($html) {

  preg_match_all('~~si',$html,$matches);
  $i = 0;
  $paths = array();

  foreach ($matches[1] as $img) {
    $img_old = $img;

    if(strpos($img, "http://") == false) {
      $uri = parse_url($img);
      $paths[$i]['path'] = $_SERVER['DOCUMENT_ROOT'].$uri['path'];
      $content_id = md5($img);
      $html = str_replace($img_old,'cid:'.$content_id,$html);
      $paths[$i++]['cid'] = $content_id;
    }
  }

  $boundary = "--".md5(uniqid(time()));
  $headers .= "MIME-Version: 1.0\n";
  $headers .="Content-Type: multipart/mixed; boundary=\"$boundary\"\n";
  $headers .= "From: ".DEFCALLBACKMAIL."\r\n";
  $multipart = '';
  $multipart .= "--$boundary\n";
  $kod = 'utf-8';
  $multipart .= "Content-Type: text/html; charset=$kod\n";
  $multipart .= "Content-Transfer-Encoding: Quot-Printed\n\n";
  $multipart .= "$html\n\n";

  foreach ($paths as $path) {
    if(file_exists($path['path']))
      $fp = fopen($path['path'],"r");
      if (!$fp)  {
        return false;
      }

    $imagetype = substr(strrchr($path['path'], '.' ),1);
    $file = fread($fp, filesize($path['path']));
    fclose($fp);

    $message_part = "";

    switch ($imagetype) {
      case 'png':
      case 'PNG':
            $message_part .= "Content-Type: image/png";
            break;
      case 'jpg':
      case 'jpeg':
      case 'JPG':
      case 'JPEG':
            $message_part .= "Content-Type: image/jpeg";
            break;
      case 'gif':
      case 'GIF':
            $message_part .= "Content-Type: image/gif";
            break;
    }

    $message_part .= "; file_name = \"$path\"\n";
    $message_part .= 'Content-ID: <'.$path['cid'].">\n";
    $message_part .= "Content-Transfer-Encoding: base64\n";
    $message_part .= "Content-Disposition: inline; filename = \"".basename($path['path'])."\"\n\n";
    $message_part .= chunk_split(base64_encode($file))."\n";
    $multipart .= "--$boundary\n".$message_part."\n";

  }

  $multipart .= "--$boundary--\n";
  return array('multipart' => $multipart, 'headers' => $headers);  
}