title: PHP undefined index error?
body: <p>I have a simple contact form thats throwing up an </p>
  
  <p>"Notice: Undefined index: e in \nas43ent\Domains\m\mysite.co.uk\user\htdocs\contact-us.php on line 24"</p>
  
  <p>error, I cant seem to see why however as my syntax looks correct? </p>
  
  <pre><code>&lt;?php 
  
  $name = $_POST['name'];
  $email = $_POST['email'];
  $subject = $_POST['subject'];
  $message = $_POST['message'];
  $to = "dave@.co.uk";
  
      //begin of HTML message
      $message = "
    From : $name,
    Email: $email,
    Subject: $subject,
    Message: $message ";
     //end of message
  
      // To send the HTML mail we need to set the Content-type header.
      $headers = "MIME-Version: 1.0\r\n";
      $headers .= "Content-type: text/html; charset=iso-8859-1\r\n";
      $headers  .= "From: Website Enquiry";
  
  
  if (isset($_POST['name'])) {
         // now lets send the email.
     mail($to, $subject, $message, $headers);
  
  header('Location: ' . $_SERVER['HTTP_REFERER'] . '?e=Thankyou, we will be in touch shortly.');
  
  } else {header('Location: ' . $_SERVER['HTTP_REFERER'] . '?e=There was an error sending your message, Please try again.');}
  
  ?&gt; 
  </code></pre>