public function create_wish_list($title,$product,$price,$message)
    {
        $db = DB();
        $joindate = date("F j, Y, g:i a");
        $stmt = $db->prepare("INSERT INTO wishlist(title,product,price,description,JOINDATE)
            VALUES(:utitle, :uproduct, :uprice, :umessage, :JOINDATE)");
        $stmt->execute([
            ':utitle' => $title,
            ':uproduct' => $product,
            ':uprice' => $price,
            ':umessage' => $message,
            ':JOINDATE' => $joindate
        ]);

        if ($stmt->rowCount() == 1) {
            return $db->insert_id;  // Reference: http://php.net/manual/en/mysqli.insert-id.php
        } else {
            return false;
        }
    }