/**
     * 支付宝参数配置
     * @return AopClient
     */
    public static function aliConfig(){

        //需要包含的支付宝调用文件
        require_once '/../library/alipaywap/aop/AopClient.php';
        require_once '/../library/alipaywap/aop/request/AlipayTradePayRequest.php';
        require_once '/../library/alipaywap/aop/request/AlipayTradeRefundRequest.php';
        require_once '/../library/alipaywap/aop/request/AlipayFundAuthOperationCancelRequest.php';
        require_once '/../library/alipaywap/aop/request/AlipayFundAuthOrderUnfreezeRequest.php';
        require_once '/../library/alipaywap/aop/request/AlipayFundAuthOrderAppFreezeRequest.php';
        require_once '/../library/alipaywap/aop/request/AlipayFundAuthOperationDetailQueryRequest.php';

        $aop = new AopClient ();
        $aop->appId  = ''//支付宝appid
        $aop->rsaPrivateKey = '';//商家私钥
        $aop->alipayrsaPublicKey = '';//支付宝公钥
        $aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
        $aop->apiVersion = '1.0';
        $aop->signType = 'RSA2';
        $aop->postCharset='UTF-8';
        $aop->format='json';

        return $aop;
    }

    /**
     * 资金冻结
     * @param $out_order_no   商户授权资金订单号
     * @param $out_request_no 商户本次资金操作的请求流水号
     * @param $amount         需要冻结的金额
     * @return string
     */
    public function capitalFrozen($out_order_no,$out_request_no,$amount)
    {
        //调用配置、和方法
        $aop = self::aliConfig();

        $request = new AlipayFundAuthOrderAppFreezeRequest ();

//        $path = APPLICATION_PATH.'/../public/ali/capital';
//
//        //判断是否有这个路径
//        if (!is_dir($path)){
//            mkdir($path,0777,true);
//        }
//
//        $data = "out_order_no：".$out_order_no."------out_request_no：".$out_request_no."------".date('Y-m-d H:i:s')."\r\n";
//        //写入日志
//        file_put_contents($path."/".date('Y-m-d').".txt",$data);


        //组装数据发送资金冻结请求
        $request->setBizContent(
            json_encode([
                'out_order_no'          =>$out_order_no,        //商户授权资金订单号
                'out_request_no'        =>$out_request_no,      //商户本次资金操作的请求流水号
                'order_title'           =>'测试预授权冻结',       //业务订单的简单描述
                'amount'                =>$amount,              //需要冻结的金额
                'product_code'          =>'PRE_AUTH_ONLINE',    //销售产品码
                'payee_user_id'         =>'2088131877673319',   //收款方的支付宝用户号ID
                'pay_timeout'           =>'90m',                //该笔订单允许的最晚付款时间
                'scene_code'            =>'OVERSEAS_ONLINE_AUTH_COMMON_SCENE',//场景码
                'trans_currency'        =>'CNY',                //标价币种  人民币
                'settle_currency'       =>'CNY',                //商户指定的结算币种  人民币
                'enable_pay_channels'   =>[                     //商户可用该参数指定用户可使用的支付渠道
//                    ['payChannelType'   =>'PCREDIT_PAY'],     //暂不支持花呗
                    ['payChannelType'   =>'MONEY_FUND']         //余额宝
                ]
            ])
        );
        $request->setNotifyUrl('url');//请求成功回调地址

        $result = $aop->sdkExecute($request);

        return $result;

    }

请求成功会返回一串字符串示例：

之后小程序调用支付宝返回的orderStr唤起支付示例：

my.tradePay({
  // 调用资金冻结接口（alipay.fund.auth.order.app.freeze），获取资金授权参数
  orderStr: 'alipay_sdk=alipay-sdk-java-3.0.118.DEV&app_id=2018112803019836&biz_content=%7B%22amount%22%3A%220.02%22%2C%22extra_param%22%3A%22%7B%5C%22category%5C%22%3A%5C%22CHARGE_PILE_CAR%5C%22%7D%22%2C%22order_title%22%3A%22%D6%A7%B8%B6%B1%A6%D4%A4%CA%DA%C8%A8%22%2C%22out_order_no%22%3A%22ZMOutOrderNoAppFreeze2018052915543415090975%22%2C%22out_request_no%22%3A%22ZMOutReqNoAppFreeze20180529155434581875858%22%2C%22pay_timeout%22%3A%222d%22%2C%22payee_user_id%22%3A%222088202224929664%22%2C%22product_code%22%3A%22PRE_AUTH_ONLINE%22%7D&charset=GBK&format=json&method=alipay.fund.auth.order.app.freeze&sign=L4wk%2FNKcbJOo3n6Q5qbPzn0jUsvZlK4jr7iXnghudR0zeWJMmeNC71qIBSQfIz45n%2B5iTd0NQ5IK581xI2xCShTCiKAywnQcDmA%2Bjf%2BrRdKCDQCMLfCz%2BZ37C%2B6zxAX3e81%2F8Hr29lw4VPFfHkp9FmMwKw%2FGkNfV5ZlWoh7UtN8%3D&sign_type=RSA&timestamp=2018-05-29+15%3A54%3A35&version=1.0',
  success: (res) => {
    my.alert({
    content: JSON.stringify(res),
  });
  },
  fail: (res) => {
    my.alert({
    content: JSON.stringify(res),
  });
  }
});

冻结成功返回参数：

{
 "alipay_fund_auth_order_app_freeze_response" :{
     "code" : "10000" ,
     "msg" : "Success" ,
     "auth_no" : "2014070800002001550000014417" ,
     "out_order_no" : "4977164666634053" ,
     "operation_id" : "2014070800032850551" ,
     "out_request_no" : "2014070700166653" ,
     "amount" : 0.02 ,
     "status" : "SUCCESS" ,
     "payer_user_id" : "2088102000275885" ,
     "gmt_trans" : "2014-09-15 11:23:04" ,
     "pre_auth_type" : "CREDIT_AUTH" ,
     "credit_amount" : 0.01 ,
     "fund_amount" : 0.01 
  }
, "sign" : "ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE" 
}