cURL post form problem

Hallo!

I have two files: curl.php and form.php.

curl.php

$ch = curl_init("http://localhost/form.php");
  
  	
   $params = "txt=4234243&submit=submit"; //you must know what you want to post
    
  
  	    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, "$params");
  
  
   $result = curl_exec($ch);
   curl_close($ch);
   print $result;

PHP:

form.php

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input name="txt" type="text" />
<input name="submit" type="submit" value="submit" />
</form>


<?php
if (isset ($_POST['submit'])) {

	$text = $_POST['txt'];

		if ((int)$text) {
		
		header ("Location: http://localhost/form.php?new=$text");
		
		} else {
		
		header ("Location: http://localhost/form.php?error=1");
		
		}

}


if (isset ($_GET['new'])) {

	echo "You typed right message" . $_GET['new'];

} 

if (isset ($_GET['error']) == '1') {

	echo "Wrong!....";

} 

?>

PHP:

When launching curl.php emerges order form.
When completing form and pressing the button I forward in form.php and receive the data there (in form.php)....

How the result is got In curl.php?

Is there any cURL guru?
Thanx!