[SOLVED] Why does this create both cookies?

[guymclaren]

$coid = $_COOKIE["affiliate"];
if ($coid == NULL) {
$myid = $_GET['aff'];
			if ($myid != NULL){
				setcookie("affiliate","$myid");
		}	else {
				setcookie("affiliate","MCL01");
			header('Location:http://webtech.co.za/order.php'); 
		}
}

[DyslexicDog]

Try this.

 

$coid = $_COOKIE["affiliate"];
if ($coid == NULL) {
$myid = $_GET['aff'];
			if ($myid !== NULL){
				setcookie("affiliate","$myid");
		}	else {
				setcookie("affiliate","MCL01");
			header('Location:http://webtech.co.za/order.php'); 
		}
}