贝宝自适应支付PHP

我有这个问题。我已按照本教程进行操作-> http://www.youtube.com/watch?v=rzRR1i-F_VA

设置完所有内容后，我在通过身份验证过程时会遇到一些问题。在对身份验证进行了一些研究之后，我已经对此进行了测试-> https://developer.paypal.com/webapps/developer/docs/classic/lifecycle/ug_sandbox/

在此过程中的某个时刻（发出测试请求），我已经在bash控制台中对其进行了测试，并且我的用户名，密码和签名有效。所以我认为问题出在我正在使用的代码中。

所以这是代码：

<?php
class PaypalTest extends CComponent{

public $api_user = "**********************";
public $api_pass = "***********";
public $api_sig = "**************************";
public $app_id = "APP-80W284485P519543T";
public $apiUrl = 'https://svcs.sandbox.paypal.com/AdaptivePayments/';
public $paypalUrl="https://www.paypal.com/webscr?cmd=_ap-payment&paykey=";
public $headers;

public function __construct(){
    $this->headers = array(
        "X-PAYPAL-SECURITY-USERID: ".$this->api_user,
        "X-PAYPAL-SECURITY-PASSWORD: ".$this->api_pass,
        "X-PAYPAL-SECURITY-SIGNATURE: ".$this->api_sig,
        "X-PAYPAL-REQUEST-DATA-FORMAT: JSON",
        "X-PAYPAL-RESPONSE-DATA-FORMAT: JSON",
        "X-PAYPAL-APPLICATION-ID: ".$this->app_id,
    );
}

public function getPaymentOptions($paykey){

}
public function setPaymentOptions(){

}
public function _paypalSend($data,$call){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $this->apiUrl.$call);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
    curl_setopt($ch, CURLOPT_HEADER, $this->headers);
    $response = json_decode(curl_exec($ch),true);
    return $response;

}
public function splitPay(){

    // create the pay request
    $createPacket = array(
        "actionType" =>"PAY",
        "currencyCode" => "USD",
        "receiverList" => array(
            "receiver" => array(
                array(
                    "amount"=> "1.00",
                    "email"=>"********@hotmail.com"
                ),
                array(
                    "amount"=> "2.00",
                    "email"=>"********@gmail.ca"
                ),
            ),
        ),
        "returnUrl" => "http://test.local/payments/confirm",
        "cancelUrl" => "http://test.local/payments/cancel",
        "requestEnvelope" => array(
            "errorLanguage" => "en_US",
            "detailLevel" => "ReturnAll",
        ),
    );

    $response = $this->_paypalSend($createPacket,"Pay");
}
}

这是电话：

$payment = new PaypalTest();
$payment->splitPay();

很简单，但是有些不起作用。而且我对Curl并不是很熟悉，所以我认为你们可以帮助我

PS：我处于沙盒模式

谢谢

卡尔