Paypal payout get transaction id

Question

i use curl to transfer money from business to several personal user . 

With a loop i find user that must receive the payment and with a curl POST request and php i do a payment .

The payment return a response with a payout_batch_id and with this i do a curl GET request to get transaction id , but if i dont sleep php for almost 5 seconds i have the response pending instead success . how can i be sure if the payment are really do ?

This is my code :

###########################################################################################
#                      PAYOUT FROM BUSINESS TO PERSONAL                                   #
###########################################################################################





private function  curl_request($url, $method, $headers = [], $data = [], $curl_options = []){

        $curl = curl_init();

        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_TIMEOUT, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);

        //--- If any headers set add them to curl request
        if(!empty($headers)){
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
        }

        //--- Set the request type , GET, POST, PUT or DELETE
        switch($method){
            case "POST":
            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");
            break;
        case "PUT":
            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "PUT");
            break;
        case "DELETE":
            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "DELETE");
            break;
        default:
            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "GET");
            break;
        }

        //--- If any data is supposed to be send along with request add it to curl request
        if($data){
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
        //--- Any extra curl options to add in curl object
        if($curl_options){
            foreach($curl_options as $option_key => $option_value){
                curl_setopt($curl, $option_key, $option_value);
            }
        }

        $response = curl_exec($curl);
        $error = curl_error($curl);
        curl_close($curl);

        //--- If curl request returned any error return the error
        if ($error) {
            return "CURL Error: $error";
        }
        //--- Return response received from call
        return $response;
}


public function get_access_token()
{

    //--- Headers for our token request
    $headers[] = "Accept: application/json";
    $headers[] = "Content-Type: application/x-www-form-urlencoded";

    //--- Data field for our token request
    $data = "grant_type=client_credentials";

    //--- Pass client id & client secrent for authorization
    $curl_options[CURLOPT_USERPWD] = $this->CI->config->item('client_id') . ":" . $this->CI->config->item('client_secret');

    $token_request = $this->curl_request($this->CI->config->item('PAYPAL_TOKEN_URL'), "POST", $headers, $data, $curl_options);
    $token_request = json_decode($token_request);
    if(isset($token_request->error)){

        $result['no_error'] = FALSE;

        $result['message_error'] =  $token_request->error_description;



    }else{

        $result['no_error'] = TRUE;

        $result['token_request'] = $token_request ;

    } 

    return $result;

}


function transfer_money_from_business_to_personal($email_receiver,$cifra)
{   


    $this->log_ipn_test('########################## NUOVO TENTATIVO DI PAGAMENTO ############################## ');


    if ($email_receiver=='') {

      $this->log_ipn_test('Mail vuota impossibile pagare');
      die();
    }

    //restituisce un array per poter inserire nel caso gli errori
    $result= $this->get_access_token();



    if($result['no_error']){


        $token_request = $result['token_request'];

        $this->log_ipn_test('Token Ok');

        $headers = $data = [];
        //--- Headers for payout request
        $headers[] = "Content-Type: application/json";
        $headers[] = "Authorization: Bearer $token_request->access_token";

        $time = time();
        //--- Prepare sender batch header
        $sender_batch_header["sender_batch_id"] = $time;
        $sender_batch_header["email_subject"]   = "Payout Received";
        $sender_batch_header["email_message"]   = "You have received a payout, Thank you for using our services";

        //--- First receiver
        $receiver["recipient_type"] = "EMAIL";
        $receiver["note"] = "Thank you for your services";
        $receiver["sender_item_id"] = $time++;
        $receiver["receiver"] = $email_receiver;
        $receiver["amount"]["value"] = $cifra;
        $receiver["amount"]["currency"] = "EUR";
        $items[] = $receiver;
        /*
        //--- Second receiver
        $receiver["recipient_type"] = "EMAIL";
        $receiver["note"] = "You received a payout for your services";
        $receiver["sender_item_id"] = $time++;
        $receiver["receiver"] = "buyer2@example.com";
        $receiver["amount"]["value"] = 15.00;
        $receiver["amount"]["currency"] = "USD";
        $items[] = $receiver;
        */
        $data["sender_batch_header"] = $sender_batch_header;
        $data["items"] = $items;

        //--- Send payout request
        $payout = $this->curl_request($this->CI->config->item('PAYPAL_PAYOUTS_URL'), "POST", $headers, json_encode($data));

        $payout = json_decode($payout);
        //$this->log_ipn_test("|2|$payout[0]['batch_header']");
        //$this->log_ipn_test("|2|$payout[0]['batch_header']['payout_batch_id']");



        $headers2 = $data2 = [];
        //--- Headers for payment description
        $headers2[] = "Content-Type: application/json";
        $headers2[] = "Authorization: Bearer $token_request->access_token";

        $link = $payout->links[0]->href;

        $this->log_ipn_test($link);

        sleep(3); //sleep to prevent PENDING

        $dati_pagamento = $this->curl_request($link, "GET", $headers2);

        $this->log_ipn_test(json_encode($dati_pagamento));

        var_dump($dati_pagamento);

        if($payout){

            return TRUE;

        }else{

            return FALSE;

        }


    }else{

        $this->log_ipn_test($result['message_error']);

        return FALSE;


    }

} //fine transfer_money_from_business_to_personal


###########################################################################################
#                       END TRANSFER FROM BUSINESS TO PERSONAL                            #
###########################################################################################