//微信小程序提现到零钱
    public function wxWithdraw(Request $request)
    {
        //$openid = $request->param(\'wxopenid\');
        $openid = \'接收提现的用户openid\';
        $amount = $request->param(\'w_money\');

        $data = [
            \'mch_appid\' => \'小程序appid\',
            \'mchid\' => \'小程序商户号\',//商户号
            \'nonce_str\' => self::getNonceStr(),//随机字符串，长度要求在32位以内
            \'partner_trade_no\' => self::create_order_no(),//商户订单号
            \'openid\' => $openid,
            \'check_name\' => \'NO_CHECK\',
            \'amount\' => 30,//标价金额，单位分
            \'desc\' => \'提现的描述\',
            \'spbill_create_ip\' => self::getip()//终端IP
        ];

        $data[\'sign\'] = self::makeSign($data);

        $xmldata = self::array2xml($data);

        $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers";
        $res = self::curl_post_ssl2($url, $xmldata);

        if (empty($res)) {
            return json([\'status\' => 0, \'data\' => \'\', \'msg\' => \'连接失败\']);
        }

        $content = self::xml2array($res);
        p($content);//打印提现结果
    }

    //商户系统内部订单号，要求32个字符内
    public function getNonceStr($length = 32) {
        $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
        $str   = "";
        for ( $i = 0; $i < $length; $i++ )  {
            $str .= substr($chars, mt_rand(0, strlen($chars)-1), 1);
        }
        return $str;
    }

    //生成唯一订单号(简化版)
    public function create_order_no() {
        $order_no = substr(date(\'YmdHis\'),2).rand(10000, 99999);
        return $order_no;
    }

    //获取IP地址
    public function getip() {
        static $ip = \'\';
        $ip = $_SERVER[\'REMOTE_ADDR\'];
        if(isset($_SERVER[\'HTTP_CDN_SRC_IP\'])) {
            $ip = $_SERVER[\'HTTP_CDN_SRC_IP\'];
        } elseif (isset($_SERVER[\'HTTP_CLIENT_IP\']) && preg_match(\'/^([0-9]{1,3}\.){3}[0-9]{1,3}$/\', $_SERVER[\'HTTP_CLIENT_IP\'])) {
            $ip = $_SERVER[\'HTTP_CLIENT_IP\'];
        } elseif(isset($_SERVER[\'HTTP_X_FORWARDED_FOR\']) AND preg_match_all(\'#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s\', $_SERVER[\'HTTP_X_FORWARDED_FOR\']matches)) {
            foreach ($matches[0] AS $xip) {
                if (!preg_match(\'#^(10|172\.16|192\.168)\.#\', $xip)) {
                    $ip = $xip;
                    break;
                }
            }
        }
           return $ip;
       }

    //生成签名
    public function makeSign($data){
        //获取微信支付秘钥
        $key = "小程序支付key";//这个在微信商户平台可以查看
        // 去空
        $data=array_filter($data);
        //签名步骤一：按字典序排序参数
        ksort($data);
        $string_a=http_build_query($data);
        $string_a=urldecode($string_a);
        //签名步骤二：在string后加入KEY
        $string_sign_temp=$string_a."&key=".$key;
        //签名步骤三：MD5加密
        $sign = md5($string_sign_temp);
        // 签名步骤四：所有字符转为大写
        $result=strtoupper($sign);
        return $result;
    }


    public function array2xml($arr, $level = 1)
    {
        $s = $level == 1 ? "<xml>" : \'\';
        foreach ($arr as $tagname => $value) {
            if (is_numeric($tagname)) {
                $tagname = $value[\'TagName\'];
                unset($value[\'TagName\']);
            }
            if (!is_array($value)) {
                $s .= "<{$tagname}>" . (!is_numeric($value) ? \'<![CDATA[\' : \'\') . $value . (!is_numeric($value) ? \']]>\' : \'\') . "</{$tagname}>";
            } else {
                $s .= "<{$tagname}>" . $this->array2xml($value, $level + 1) . "</{$tagname}>";
            }
        }

        $s = preg_replace("/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", \' \', $s);
        return $level == 1 ? $s . "</xml>" : $s;
    }


　　
    public function curl_post_ssl2($url, $xmldata, $second=30,$aHeader=array()){
        $isdir = str_replace(\'Api.php\',\'\',__FILE__) . \'cert/\';//这个是证书，需要到微信商户平台下载，然后放到服务器上

        $ch = curl_init();
        curl_setopt($ch,CURLOPT_TIMEOUT,$second);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
        //这里设置代理，如果有的话
        //curl_setopt($ch,CURLOPT_PROXY, \'10.206.30.98\');
        //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch,CURLOPT_URL,$url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);

        curl_setopt($ch, CURLOPT_SSLCERTTYPE, \'PEM\');//证书类型
        curl_setopt($ch, CURLOPT_SSLCERT, $isdir . \'apiclient_cert.pem\');//证书位置
        curl_setopt($ch, CURLOPT_SSLKEYTYPE, \'PEM\');//CURLOPT_SSLKEY中规定的私钥的加密类型
        curl_setopt($ch, CURLOPT_SSLKEY, $isdir . \'apiclient_key.pem\');//证书位置
        curl_setopt($ch, CURLOPT_CAINFO, \'PEM\');
        //curl_setopt($ch, CURLOPT_CAINFO, $isdir . \'rootca.pem\');这个是可选的

        curl_setopt($ch,CURLOPT_POST, 1);
        curl_setopt($ch,CURLOPT_POSTFIELDS,$xmldata);
        $data = curl_exec($ch);
        if(curl_errno($ch)){
            echo \'Error+\'.curl_error($ch);
        }
        curl_close($ch);
        return $data;
    }

　　//将xml转为array
    public function xml2array($xml){
        　　//禁止引用外部xml实体
     　　libxml_disable_entity_loader(false);
     　　$result= json_decode(json_encode(simplexml_load_string($xml, \'SimpleXMLElement\', LIBXML_NOCDATA)), true);
     　　return $result;
 　　}