redirecting to error page produces original content below?

The following php is used to redirect the user of an email form if the email address does not meet the syntax.

// Subscription request from a subscription form (in page or widget), can be
// a direct subscription with no confirmation
if ($action == 's') {
if (!newsletter_is_email($_REQUEST['ne'])) {
$url = "http://www.ace4space.com/content/subscription-error/";
$content = file_get_contents($url);

echo $content;
}

Unfortunately this produces an error where the user is taken to the correct URL

HOWEVER;

The initial page is displayed BELOW the new URL contents? Any idea on how to redirect the user to a fresh page showing the subscription error page ONLY without the referring page below it...
Please view any page @ http://www.ace4space.com and enter a NON formated email address to be sent to http://www.ace4space.com/content/subscription-error/ and see what I mean!

Its annoying me! Why won't the http://www.ace4space.com/content/subscription-error/ page just display the content of http://www.ace4space.com/content/subscription-error/?

 

use
header('Location: http://redirected.site.com/page.html');
exit();

to redirect users to the specified page

 

What have you got AFTER the ending curly brace of the 'if' loop ? ? ?

;-)

 

If you haven't passed headers do what JAY6390 said, if not try:

// Subscription request from a subscription form (in page or widget), can be
// a direct subscription with no confirmation
if ($action == 's') {
if (!newsletter_is_email($_REQUEST['ne'])) {
$url = "http://www.ace4space.com/content/subscription-error/";
echo "<SCRIPT LANGUAGE=javascript>window.location='$url'</SCRIPT>";
exit();
}

PHP:

 

Woo Woo thanks Jay - all sorted now mate - and thanks to all who commented!