xyzshop/helper/refill/api/xyz/chuangyu_ylyw/config.php

<?php
namespace refill\chuangyu_ylyw;

use mtopcard;
class config
{
    const ORDER_URL = 'http://120.55.55.137:8080/api/charge';
    const QUERY_URL = 'http://120.55.55.137:8080/api/query';
    const BALANCE_URL = 'http://120.55.55.137:8080/api/balance';

    const MCH_ID = '1008';
    const SECRET_KEY = '7a2118a9cb7ee70f2fa9dd9b9260a239';
    const NOTIFY_URL = BASE_SITE_URL . "/mobile/callback/refill_chuangyu_ylyw.php";

    const ExtHeaders = ['Content-Type: application/json'];

    const ProductIdS = [
        mtopcard\ChinaMobileCard =>
            [
                50  => '10003',
                100 => '10004',
                200 => '10005',
                300 => '10006',
                500 => '10007',
            ],
        mtopcard\ChinaUnicomCard =>
            [
                50  => '10011',
                100 => '10012',
                200 => '10013',
                300 => '10014',
            ],
        mtopcard\ChinaTelecomCard =>
            [
                50  => '10019',
                100 => '10020',
                200 => '10021',
                300 => '10022',
                500 => '10023',
            ],
    ];

    public static function sign($params)
    {
        ksort($params);
        $content = '';
        foreach ($params as $key => $value) {
            if(self::check_empty($value) === false) {
                $content .= "{$key}={$value}&";
            }
        }
        $content .= 'secret_key=' . config::SECRET_KEY;
        return md5(md5($content));
    }

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

        return false;
    }
}