<?php

namespace common\pay\qianwanbao;

class PayUtils
{
    /**
     * @param array $data
     * @param string $secretKey
     * @return string
     */
    public static function makeSign($data, $secretKey)
    {
        $str = '';
        ksort($data);

        $tmp = array();
        foreach ($data as $k => $param) {
            if($k == 'signature'){
                continue;
            }
            $tmp[] = $k . '=' . ($urlEncode ? urlencode($param) : $param);
        }
        $signStr = implode('&', $tmp);

        $params_str = $signStr. '&key=' . $secretKey;
        return strtoupper(md5($params_str));
    }

    /**
     * @param array $data  参数
     * @param string $secretKey
     * @return bool
     */
    public static function checkSign($data, $secretKey)
    {
        $sign = isset($data['signature']) ? $data['signature'] : null;
        if ($sign == null) {
            return false;
        }
        return self::makeSign($data, $secretKey) === $sign;
    }
}