xyzshop/helper/refill/api/xyz/gftd/RefillPhone.php

<?php
namespace refill\gftd;

require_once(BASE_HELPER_RAPI_PATH . '/gftd/config.php');

use refill;
use refill\IRefillPhone;

class RefillPhone extends IRefillPhone
{
    public function __construct($cfgs)
    {
        parent::__construct($cfgs);
    }

    public function add($card_no,$card_type,$amount,$input)
    {
        return [false,'No Implement'];
    }
    public function query($refill_info)
    {
        return [false,'No Implement'];
    }
}