Pass SESSION variables into ENFOLD settings

I decided to go the cookie route with this and I wrote the following code, and placed it in functions.php. The code:

1) uses if(isset($_GET[‘user’])) to look for three GET variables that were passed in the URL, like so:
http://helium-hotspot.net/?usr=falcon&phn=720-745-1760& (Email address hidden if logged out)
2) If the Get variable isset, then the those values are set as a cookie with setcookie.
3) Else if the GET variables are empty the it sets cookies using default values.
4) lastly it creates a shortcode to place in wordpress.

Everything works, but the problem is the function runs on every page and if the values arer NOT again passed on that page the default values get placed.
What I want is to set the variables one time and carry them through the website as the user navigates. Even better , have the same variables in place the next time the user visits..I understand that php wipes everything and starts fresh every time a page is loaded.

What logic could I add to accomplish this?

May be what I am trying to do is more suited for placing the values in the user meta table in the database.

If GET

// SET COOKIE

function set_usr_cookie() { 

	// Get usr from URL
	$affiliate_user = $_GET['usr'];

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

		// Set the cookie
		setcookie('afuser', $affiliate_user , time()+31556926);

	}  
		else{

			setcookie('afuser', 'falcon' , time()+31556926);
	}
 
	function affil_user() {

		// Use information stored in the cookie 
		$current_afuser = $_COOKIE['afuser'];

		$string .= $current_afuser ; 

		return $string;
		}  
	// Add a shortcode 
	add_shortcode('insert_user', 'affil_user');
 
} 

add_action('init', 'set_usr_cookie');

function set_phn_cookie() { 

	// Get phn from URL
	$affiliate_phone = $_GET['phn'];

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

		// Set the cookie
	setcookie('afphone', $affiliate_phone , time()+31556926);

	}  
		else{

			setcookie('afphone', '720-275-1350' , time()+31556926);
		}
 
	function affil_phone() {

		// Use information stored in the cookie 
		$current_afphone = $_COOKIE['afphone'];

		$string .= $current_afphone ; 

		return $string;
		}  
	// Add a shortcode 
	add_shortcode('insert_phone', 'affil_phone');
 
} 

add_action('init', 'set_phn_cookie');

function set_eml_cookie() { 

	// Get eml from URL
	$affiliate_email = $_GET['eml'];

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

		// Set the cookie
	setcookie('afemail', $affiliate_email , time()+31556926);

	}  
		else{

			setcookie('afemail', ' (Email address hidden if logged out) ' , time()+31556926);
	}
 
	function affil_email() {

		// Use information stored in the cookie 
		$current_afemail = $_COOKIE['afemail'];

		$string .= $current_afemail ; 

		return $string;
		}  
	// Add a shortcode 
	add_shortcode('insert_email', 'affil_email');
 
} 

add_action('init', 'set_eml_cookie');