Using Location: to Redirect PHP on form submit

Question

Ok, I have this page where the user submits a form using  <form name="form1" method="post"
         action="<?php echo $_SERVER['PHP_SELF']; ?> and it runs this code below.  Basically sends and email and writes some files to the database.  I want that page to direct to a new page at the end.  I have tried using location: newpage.php in various spots but can't get it to run.  Everything else works great.  Thanks.
below resides in HEAD
<?php
// our e-mail function
function send_mail($from_name, $from_email, $message) {
    $to = $_REQUEST['to_email'];
    $subject = "sub";
    $headers .= "From: $from_name <$from_email>\n";
    $headers .= "Reply-To: $from_name <$from_email>\n";
    $send_mail = mail($to, $subject, $message, $headers);
    if ($send_mail) {
        return true;
    } else {
        return false;
// check that the form is truly sent
if ($_POST['send'] == 1) {
    // get data from the form
    //$from_name=$_POST['from_name'];
     $to_email=$_POST['to_email'];
     echo $to_mail;
    $from_email=$_POST['from_email'];
   $message=$_POST['fname']." ".$_POST['lname']";
//mysql_query("INSERT INTO table (this, this and this)
//VALUES ($_POST['id'], $_POST['field2'])");
  mysql_select_db($blah, $blah);
    $result=mysql_query("INSERT INTO blah (id, field2) values( '','$id','$field2')");
    // send e-mail
    $try_mail = send_mail($from_name, $from_email, $message);
    // output the result
    if ($try_mail) {
        echo "Your e-mail message was sent!";
    } else {
        echo "Your e-mail message was not sent!";
?>

Answer 1

That looks like the correct answer, DW inserts the following similar code when creating an db insert or update, as one of the options to goto a page after the insert. This one uses the header function to perform the same thing.
  $insertGoTo = "some_new_file.php";
  if (isset($HTTP_SERVER_VARS['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $HTTP_SERVER_VARS['QUERY_STRING'];
  header(sprintf("Location: %s", $insertGoTo));
Just be sure to perform all the emailing and updating before this code.
Watch out for header issues as explained  here
http://php.net/manual/en/function.header.php
-Daniel