Сохранение UTM метки в COOKIES сайта WORDPRESS

// Добавить в functions.php

// Сохранение UTM метки в COOKIES сайта
add_action('init', 'save_utm_to_cookie');
function save_utm_to_cookie() {
    $day = 30;
    $date = time()+3600*24*$day;
    if(isset($_GET["utm_source"])) setcookie("utm_source",$_GET["utm_source"],$date,"/"); 
    if(isset($_GET["utm_medium"])) setcookie("utm_medium",$_GET["utm_medium"],$date,"/"); 
    if(isset($_GET["utm_campaign"])) setcookie("utm_campaign",$_GET["utm_campaign"],$date,"/"); 
    if(isset($_GET["utm_content"])) setcookie("utm_content",$_GET["utm_content"],$date,"/"); 
    if(isset($_GET["utm_term"])) setcookie("utm_term",$_GET["utm_term"],$date,"/"); 
}