function(config) {
                        var config_copy = JSON.parse(JSON.stringify(config));

                        //post cookie
                        $.ajax({
                                url: "php/pivot_cookie.php",
                                type: "POST",
                                data: config_copy,
                                success: function(){ alert("Cookie: success") },
                                error: function(data){alert(data);}
                            });

                    }

$cookie_name = "pivot_config";
$cookie_value = $_POST['config_copy'];
setcookie($cookie_name, $cookie_value, "/");

//cookie check function
if(!isset($_COOKIE[$cookie_name])) {
    echo "Cookie named '" . $cookie_name . "' is not set!";
} else {
    echo "Cookie '" . $cookie_name . "' is set!<br>";
    echo "Value is: " . $_COOKIE[$cookie_name];
}

$(document).ready(function(){
                                $.ajax({
                                    url: "php/pivot_cookie.php",
                                    type: "GET",
                                    data: (cookie - I dont know how to get it),
                                    success: function(){ alert("Cookie Retreival: success") },
                                    error: function(data){alert("Cookie Retrieval: failure");}
                                });
}