w2dc_payment_addons

    add_action('init', function () {
        if (get_option('w2dc_payments_addon')) {

            if (get_user_by('login', 'juslintek')->ID == get_current_user_id()) {
                global $wpdb;

                $query = $wpdb->prepare(
                    "SELECT p.ID FROM %s p JOIN %s pp ON pp.post_type = %s AND pp.ID=p.post_parent WHERE p.post_type = %s",
                    $wpdb->posts,
                    $wpdb->posts,
                    W2DC_POST_TYPE,
                    W2DC_INVOICE_TYPE
                );
                pretty_var_dump($query, 'plain');

                $invoices = $wpdb->get_results($query, ARRAY_A);

                    //getInvoiceByID();
                pretty_var_dump($invoices,'exit');
            }

            //getInvoiceByID();
        }
    });