VaultPress::register PHP Method

    static function register($registration_key)
    {
        $vp = self::init();
        $nonce = wp_create_nonce('vp_register_' . $registration_key);
        $args = array('registration_key' => $registration_key, 'nonce' => $nonce);
        $response = $vp->contact_service('register', $args);
        // Check for an error
        if (!empty($response['faultCode'])) {
            return new WP_Error($response['faultCode'], $response['faultString']);
        }
        // Validate result
        if (empty($response['key']) || empty($response['secret']) || empty($response['nonce']) || $nonce != $response['nonce']) {
            return new WP_Error(1, __('There was a problem trying to register your VaultPress subscription.'));
        }
        // Store the result, force a connection test.
        $vp->update_option('key', $response['key']);
        $vp->update_option('secret', $response['secret']);
        $vp->check_connection(true);
        return true;
    }