php – 在我的代码沙箱PayPal的未来付款是什么问题

function paypalFuturePayment($userID,$amount)
{
    $amount=number_format($amount,2);
    /* paypal App truxx dev client and secret key*/
    if($userID && $amount){
    $userData = selectById('tbl_users','*',"id='".$userID."'");
    $refresh_token = $userData['paypal_refresh_tokens'];
    $Metadata_id = $userData['paypal_Metadata_id'];
    if($refresh_token && $Metadata_id){
        if ($_SERVER['SERVER_NAME'] == 'syonserver.com') {

            $clientId = "xxxxx";
            $secret = "xxx";

            $url1="https://api.sandBox.paypal.com/v1/oauth2/token";
            $url2="https://api.sandBox.paypal.com/v1/payments/payment";

        }else{
            $account = 0; // 0 for sandBox,1 for live
            if ($account == 1) {
                //client live
                $clientId = "xxx";
                $secret = xxx";
                $url1 = "https://api.paypal.com/v1/oauth2/token";
                $url2 = "https://api.paypal.com/v1/payments/payment";
            } else {
                //client sandBox
                $clientId = "xxx";
                $secret = "xxx";
                $url1 = "https://api.sandBox.paypal.com/v1/oauth2/token";
                $url2 = "https://api.sandBox.paypal.com/v1/payments/payment";
        }
    }



//print_r($refresh_token);die;

        $ch = curl_init();
        curl_setopt($ch,$url1);
        curl_setopt($ch,CURLOPT_HEADER,"Content-Type: application/x-www-form-urlencoded");
        curl_setopt($ch,CURLOPT_USERPWD,$clientId . ":" . $secret);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch,"grant_type=refresh_token&refresh_token=" . $refresh_token);
        $result = curl_exec($ch);
        curl_close($ch);
        $result=json_decode($result);

       //11111111   for payment Authorize: For example,to first authorize the payment,use a request similar to this:

        $access_token =  $result->access_token;
        $data = array(
            "intent" => "authorize","payer" => array(
                "payment_method" => "paypal"
            ),"transactions" => array(
                array("amount" => array(
                    "currency" => "USD","total" => $amount
                ),"description" => "future of sauces")
            ));

        $data_string = json_encode($data);
        $ch1 = curl_init();
        curl_setopt($ch1,$url2);
        $headers = array(
            'Content-Type: application/json','PayPal-Client-Metadata-Id: '.$Metadata_id,'Authorization: Bearer '.$access_token,'Content-Length: ' . strlen($data_string)
        );
        curl_setopt($ch1,$headers);
        curl_setopt($ch1,true);
        curl_setopt($ch1,1);
        curl_setopt($ch1,$data_string);
        $result1 = curl_exec($ch1);
        curl_close($ch1);

        $result1=json_decode($result1);
        $message  = $result1->message;

       if($result1->state=='approved'){
           $access_id=  $result1->transactions[0]->related_resources[0]->authorization->id;

       }else{
           if(empty($message)){
               $message ='Authorization error,Please try again.';
           }
           return array('response' => '','success' => '0','message'=>$message);
       }

       // print_r($result1);die;

      //2222222   capture the payment:
        $data =  array("amount" => array(
            "currency" => "USD","total" => $amount
        ),"is_final_capture" => "true"
        );
        $data_string = json_encode($data);
        $ch2 = curl_init();
        if ($_SERVER['SERVER_NAME'] == 'syonserver.com') {
            curl_setopt($ch2,"https://api.sandBox.paypal.com/v1/payments/authorization/$access_id/capture");
        }else {
            $account = 0; // 0 for sandBox,1 for live
            if ($account == 1) {
                //client live
             curl_setopt($ch2,"https://api.paypal.com/v1/payments/authorization/$access_id/capture");
        }else{
                curl_setopt($ch2,"https://api.sandBox.paypal.com/v1/payments/authorization/$access_id/capture");
            }
        }

        $headers = array(
            'Content-Type: application/json','Content-Length: ' . strlen($data_string)
        );
        curl_setopt($ch2,$headers);
        curl_setopt($ch2,true);
        curl_setopt($ch2,1);
        curl_setopt($ch2,$data_string);
        $response = curl_exec($ch2);
        curl_close($ch2);

        $response_a = json_decode($response,true);
        $state = $response_a['state'];
        $message = $response_a['message'];
        if(!empty($response_a)){
            if($state=='completed') {
                return array('response' => $response_a,'success' => '1','message'=>'Data received');
            }else{
                if(empty($message)){
                    $message ='Payment authorization error,Please try again.';
                }
                return array('response' => '','message'=>$message);
             }
        }
       else{
           return array('response' => '','success'=>'0','message'=>'Response nil');
           }
        }
      else
        {
            return array('response' => '','message'=>'Authorization code not available.');
        }
}else{

        return array('response' => '','message'=>'Unauthorize request.');

    }
}