cookies in different pages

Hi
I am wondering why my cookie is not working in another page.
please check if there is a problem:
first page: refer.php:
link: http://sp724.com/members/refer.php?user=1
code:

<?php

		if(isset($_GET['user']) AND is_numeric($_GET['user']) ) {
  $userid=$_GET['user'];		
  $in1Month1 = 60 * 60 * 24 * 30 + time(); 
  setcookie('refferer', $userid, $in1Months); 
if(isset($_COOKIE['refferer'])){
	$referer = $_COOKIE['refferer'];
	echo $referer;
	}
} 
//header("Location: http://rooyekhat4u.com");
?>

PHP:

2nd page:
link: http://www.sp724.com/members/saleconfirmed.php
code:

<?php
	if(isset($_COOKIE['refferer'])){
	$referer = $_COOKIE['refferer'];
	echo $referer;
	}

?>

PHP:

but the first result is different with the second one

 

As far as I know script cannot access cookies set in the same script.
So this code

 setcookie('refferer', $userid, $in1Months); 

if(isset($_COOKIE['refferer'])){
    $referer = $_COOKIE['refferer'];
    echo $referer;
    }

PHP:

will not get you value of $_COOKIE['refferer'] you have set by setcookie in line before.