xyzshop/helper/refill/api/mh/gy_normal/config.php

<?php

namespace refill\gy_normal;

class config
{
    public const MCH_ID = 10503;
    public const KEY = 'beaf87f87c6bcb8a98b853c207ca9aef';

    public const ORDER_URL = 'https://www.xyzshops.cn/mobile/index.php';
    public const NOTIFY_URL = BASE_SITE_URL . "/racc/callback/mh/gy_normal.php";


    public static function sign($params)
    {
        $empty_checker = function ($value)
        {
            if (!isset($value))
                return true;
            if ($value === null)
                return true;
            if (trim($value) === "")
                return true;

            return false;
        };

        ksort($params);

        $body = "";
        $i = 0;
        foreach ($params as $k => $v)
        {
            if (false === $empty_checker($v) && "@" != substr($v, 0, 1))
            {
                if ($i == 0) {
                    $body .= "$k" . "=" . urlencode($v);
                } else {
                    $body .= "&" . "$k" . "=" . urlencode($v);
                }
                $i++;
            }
        }

        $body .= "&key=".config::KEY;
        return md5($body);
    }
}