function weixin_pay($openid, $money, $path, $title, $info, $out_num = '')
{
    //拉取基础信息
    //获取支付基础信息，这里的话可以可以将微信支付对应的参数放到mysql里面
    //这里是查询微信小程序的appid，切记appid要与商户id关联  
    $appid = Db::name('config_data')->where('code', '=', 'wechat_appid')->value('value');
    //商户号，也就是商户申请的商户号 
    $mch_id = Db::name('config_data')->where('code', '=', 'mch_id')->value('value');
    //这里的是商户号的秘钥，要区分商户号和小程序ID的秘钥
    $miyao = Db::name('config_data')->where('code', '=', 'pay_secret')->value('value');
    //生成订单号
    if (!$out_num) {
        //未传入订单号，直接生成
        $out_num = ikzOutNum();
    }
    $res_url = 'https://' . request()->host() . $path;
    //处理传入的信息
    $info = json_encode($info);
    /*支付XML数组*/
    //小程序数据组装
    $pay_arr = array(
        //以下是必填项
        'appid' => $appid,//公众号appid
        'mch_id' => $mch_id,//商户号
        'attach' => $info,//这里存放数据库信息
        'nonce_str' => get_rand_str(), //随机字符串表
        'body' => $title, //商品描述
        'out_trade_no' => $out_num, //订单号
        'total_fee' => $money * 100, //付款金额 单位分
        'spbill_create_ip' => gethostbyname(input('server.SERVER_NAME')),//终端ip，服务器所允许的ip，微信商户后台可以配置
        'notify_url' => $res_url, //通知地址 这个是你的异步通知地址，微信商户后台进行设置的
        'trade_type' => 'JSAPI',
        'openid' => $openid, //openid
    );

    $sing_str = get_sign($miyao, $pay_arr);
    //将拼接好的签名写入数组
    $pay_sign = array('sign' => $sing_str);
    $pay_xml_array = array_merge($pay_arr, $pay_sign);

    $pay_xml_array = arrayToXml($pay_xml_array);
    $send_url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
    $responseXml = curl_post_ssl($send_url, $pay_xml_array);
    $responseObj = (array)simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);
//    echo json_encode($responseObj);die();
    //判断数据是否返回成功
    if (!empty($responseObj) && $responseObj['return_code'] == 'SUCCESS' && $responseObj['result_code'] == 'SUCCESS') {
        //数据返回成功
        //小程序端支付
        $prepay_id = $responseObj['prepay_id'];
        $jsApiParameters_array = array(
            "appId" => $appid,
            "timeStamp" => (string)time(),
            "nonceStr" => get_rand_str(),
            "package" => "prepay_id=" . $prepay_id,
            "signType" => "MD5"
        );
        $pay_sing_str = get_sign($miyao, $jsApiParameters_array);

        $pay_sign_ary = array('paySign' => $pay_sing_str);

        $pay_xml_array_pay = array_merge($jsApiParameters_array, $pay_sign_ary);
        //将支付开启状态进行封装
        $pay_status = array('status' => 'success');
        $pay_xml_array_pay = array_merge($pay_status, $pay_xml_array_pay);
        $res_info['status'] = 'success';
        $res_info['pay'] = $pay_xml_array_pay;
        $res_info['out_num'] = $out_num;
        $res_info['total'] = $responseObj;
        $res_info['app'] = $pay_arr;
        $res_info['res_url'] = $res_url;

    } else {
        //数据返回失败
        $res_info['status'] = 'pay_error';
        $res_info['out_num'] = $out_num;
        //记录错误信息
        recordOrderError($out_num, json_encode($responseObj), '2');
    }
    return $res_info;

//请求数据的方法
function curl_post_ssl($url, $vars, $cert = false, $cert_path = '', $second = 30, $aHeader = array())
{
    $ch = curl_init();
    //超时时间
    curl_setopt($ch, CURLOPT_TIMEOUT, $second);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    //这里设置代理，如果有的话
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    if ($cert) {
        //第一种方法，cert 与 key 分别属于两个.pem文件
        //默认格式为PEM，可以注释
        curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM');
        curl_setopt($ch, CURLOPT_SSLCERT, $cert_path['cert']);
        //默认格式为PEM，可以注释
        curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
        curl_setopt($ch, CURLOPT_SSLKEY, $cert_path['key']);
    }

    if (count($aHeader) >= 1) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);
    }

    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $vars);
    $data = curl_exec($ch);
    if ($data) {
        curl_close($ch);
        return $data;
    } else {
        $error = curl_errno($ch);
        curl_close($ch);
        return false;
    }
}

//生成随机数
function get_rand_str()
{
    $str = '1234567890abcdefghijklmnopqrstuvwxyz';
    $t1 = '';
    for ($i = 0; $i < 30; $i++) {
        $j = rand(0, 35);
        $t1 .= $str[$j];
    }
    return $t1;
}

//设置请求参数的方法
function arrayToXml($arr)
{
    $xml = "<xml>";
    foreach ($arr as $key => $val) {
        if (is_numeric($val)) {
            $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
        } else {
            $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
        }
    }
    $xml .= "</xml>";
    return $xml;
}

//错误信息统一记录函数
function recordOrderError($out_num, $content, $type)
{
    $error = Db::name('error_order');
    $error_data['error_out_num'] = $out_num;
    $error_data['error_type'] = $type;
    $error_data['error_info'] = $content;
    $error->insertGetId($error_data);
}

/*
 *生成签名的方法
 *@param  $my 商户应用密钥
 */
function get_sign($my, $hongbao_arr)
{

    ksort($hongbao_arr); //按照ASCII 码 从 小 到 大 排 序

    $unSignParaString = formatQueryParaMap($hongbao_arr, false);

    return sign($unSignParaString, $my);
}

/**
 * 生成订单号
 * @param $length
 * @return string
 * @throws ClientException
 */
function ikzOutNum($info = '')
{
    return $info . date('YmdHis') . rand(1000000, 9999999);
}