Cannot get page to redirect using PHP - php

Question

Everything on the form works but it will not redirect to another page. It continues to give a text message. I've added a header('Location: http://mywebsite.com/'); but no luck. I'm new at PHP and would really appreciate help in fixing this code.
Current code:
<?php
if(isset($_POST['email'])) {
$email_to = "me#email.com";
$email_subject = "Contact Request";
function died($error) {
echo "We are very sorry, but there were error(s) found with the form you submitted. ";
echo "These errors appear below.<br /><br />";
echo $error."<br /><br />";
echo "Please go back and fix these errors.<br /><br />";
die();
}
if( !isset($_POST['full_name']) ||
!isset($_POST['agency']) ||
!isset($_POST['title']) ||
!isset($_POST['email']) ||
!isset($_POST['phone']) ||
!isset($_POST['comments'])) {
died('We are sorry, but there appears to be a problem with the form you submitted.');
}
$full_name = $_POST['full_name']; // required
$agency = $_POST['agency']; // required
$title = $_POST['title']; // required
$email = $_POST['email']; // required
$phone = $_POST['phone']; // not required
$comments = $_POST['comments']; // required
$email_message = "Form details below.\n\n";
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}
$email_message .= "Name: ".clean_string($full_name)."\n";
$email_message .= "Agency: ".clean_string($agency)."\n";
$email_message .= "Title: ".clean_string($title)."\n";
$email_message .= "Email: ".clean_string($email)."\n";
$email_message .= "phone: ".clean_string($phone)."\n";
$email_message .= "Comments: ".clean_string($comments)."\n";
$headers = 'From: '.$email_from."\r\n".
'Reply-To: '.$email_from."\r\n" .
'X-Mailer: PHP/' . phpversion();
#mail($email_to, $email_subject, $email_message, $headers);
header('Location: http://mywebsite.com/');
?>
<?php } ?>

Answer 1

Is the last line of code a typo in your question or part of your code?
<?php } ?>
If it's really part of your code, php is going to try and execute '}' and most likely screw up.
You don't say what the text message is that you receive.

Answer 2

Just remove ?> after this line
header('Location: http://mywebsite.com/');