xyzshop/helper/refill/api/xyz/wangxin/RefillCallBack.php

<?php

namespace refill\wangxin;

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

use refill;

class RefillCallBack implements refill\IRefillCallBack
{
    public function verify($params): bool
    {
        $sign = $this->sign($params);
        if ($sign === 1) {
            return true;
        } else {
            return false;
        }
    }

    private function sign($params)
    {
        $sign = $params['sign'];

        unset($params['ext_content']);
        unset($params['sign']);
        $content = '';
        ksort($params);
        foreach ($params as $key => $val)
        {
            if (false === $this->check_empty($val)) {
                $content .= "{$key}={$val}&";
            }
        }
        $content = rtrim($content, '&');
        return openssl_verify($content, base64_decode($sign), config::PROVIDER_PUBLIC_KEY);
    }

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

        return false;
    }

    public function notify($params)
    {
        $status = $params['status'];
        $order_sn = $params['kh_order_id'];
        $order_info = Model('vr_order')->getOrderInfoForNotify(['order_sn' => $order_sn]);
        if (empty($order_info)) {
            return [false, false, false, false, ''];
        }

        $official_sn = '';
        $order_id = $order_info['order_id'];
        if ($status === '3') {
            $official_sn = strtolower($params['ext_content'] ?? '');
            $data['official_sn'] = $official_sn;
            Model('refill_order')->edit($order_id, $data);
            return [$order_id, true, false, true, $official_sn];
        } elseif ($status === '2') {
            return [$order_id, false, true, true, $official_sn];
        } else {
            return [$order_id, false, false, false, $official_sn];
        }
    }
}