fusian/fusiancrm/service/common/pay/wanxin/PayUtils.php

<?php

namespace common\pay\wanxin;

class PayUtils
{
    /**
     * @param array $data
     * @param string $secretKey
     * @return string
     */
    public static function makeSign($data, $secretKey)
    {
        //加密前的字符串
        $str = "";
        #加入业务类型
        $str = $str.$data['p0_Cmd'];
        #加入商户编号
        $str = $str.$data['p1_MerId'];
        #加入商户订单号
        $str = $str.$data['p2_Order'];     
        #加入支付金额
        $str = $str.$data['p3_Amt'];
        #加入交易币种
        $str = $str.$data['p4_Cur'];
        #加入商户接收支付成功数据的地址
        $str = $str.$data['p8_Url'];
        #加入支付通道编码
        $str = $str.$data['pd_FrpId'];
        #加入是否需要应答机制
        $str = $str.$data['pr_NeedResponse'];
        return self::HmacMd5($str,$secretKey);
    }

    /**
     * @param array $data  参数
     * @param string $secretKey
     * @return bool
     */
    public static function checkSign($data, $secretKey)
    {

        #取得加密前的字符串
        $sbOld = "";
        #加入商家ID
        $sbOld = $sbOld.$data['p1_MerId'];
        #加入消息类型
        $sbOld = $sbOld.$data['r0_Cmd'];
        #加入业务返回码
        $sbOld = $sbOld.$data['r1_Code'];
        #加入交易ID
        $sbOld = $sbOld.$data['r2_TrxId'];
        #加入交易金额
        $sbOld = $sbOld.$data['r3_Amt'];
        #加入货币单位
        $sbOld = $sbOld.$data['r4_Cur'];
        #加入产品Id
        $sbOld = $sbOld.$data['r5_Pid'];
        #加入订单ID
        $sbOld = $sbOld.$data['r6_Order'];
        #加入用户ID
        $sbOld = $sbOld.$data['r7_Uid'];
        #加入商家扩展信息
        $sbOld = $sbOld.$data['r8_MP'];
        #加入交易结果返回类型
        $sbOld = $sbOld.$data['r9_BType'];
        #新增的回调日期
        $sbOld = $sbOld.$data['rp_PayDate'];
        
        $sign = self::HmacMd5($sbOld,$secretKey);   //生成的签名

        if ($sign == $data['hmac']) {
            return true;
        }else{
            return false;
        }
    }

    // MD5的加密方法
    public static function HmacMd5($data,$key){
        //需要配置环境支持iconv，否则中文参数不能正常处理
        $key = iconv("GB2312","UTF-8",$key);
        $data = iconv("GB2312","UTF-8",$data);
        $b = 64;     // byte length for md5
        if (strlen($key) > $b) {
           $key = pack("H*",md5($key));
        }
        $key  =  str_pad($key, $b, chr(0x00));
        $ipad = str_pad('', $b, chr(0x36));
        $opad = str_pad('', $b, chr(0x5c));
        $k_ipad = $key ^ $ipad;
        $k_opad = $key ^ $opad;
        return md5($k_opad . pack("H*",md5($k_ipad . $data)));
    }
}