$feedback_vote = $_POST['vote'];
    $feedback_product_id = mysql_real_escape_string($_POST['feedback_product_id']);
    $feedback_review_id =  mysql_real_escape_string($_POST['feedback_review_id']);

    if (!isset($_COOKIE['product_reviews_feedback'][$feedback_review_id])) {
        setcookie("product_reviews_feedback[".$feedback_review_id."]", $feedback_vote);
        //do action blahhhh
    }