paypal - 修改试用期或为现有的 Paypal 订阅添加第二个试用期

Question

我正在尝试修改现有 Paypal 订阅的试用期。但是，似乎总是忽略 a1、p1 和 t1 值。使用 a3、p3 和 t3 更改总和和周期确实有效(IPN 通知也被发送)。

我也尝试过添加第二个试用期(同时保持第一个试用期的相同值)，但这也不起作用。

我已经阅读了 Paypal 的文档，但我找不到任何关于修改试用期的信息。这可能吗？我错过了什么？

这是我的示例代码:

<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post" target="_top">

    <!-- Identify your business so that you can collect the payments. -->
    <input type="hidden" name="business" value="XXXXX">

    <!-- Specify a Subscribe button. -->
    <input type="hidden" name="cmd" value="_xclick-subscriptions">

    <!-- Identify the subscription. -->
    <input type="hidden" name="item_name" value="Item Name">

    <!-- Set the revised subscription price and terms. -->
    <input type="hidden" name="currency_code" value="EUR">

    <input type="hidden" name="a1" value="1">
    <input type="hidden" name="p1" value="78">
    <input type="hidden" name="t1" value="D">

    <input type="hidden" name="a3" value="90.88">
    <input type="hidden" name="p3" value="1">
    <input type="hidden" name="t3" value="Y">

    <!-- Set recurring payments until canceled. -->
    <input type="hidden" name="src" value="1">

    <!-- Let current subscribers modify only. -->
    <input type="hidden" name="modify" value="2">

    <input name="custom" value="user access token" type="hidden" />

    <input type="hidden" name="notify_url" value="http://..." />
    <input type="hidden" name="cancel_return" value="http://..." />
    <input type="hidden" name="return" value="http://..." />

    <input type="hidden" name="email" value="user email" />

    <!-- Display the payment button. -->
    <input type="image" src="https://www.paypalobjects.com/en_US/GB/i/btn/btn_subscribeCC_LG.gif" border="0" name="submit" alt="PayPal – The safer, easier way to pay online.">
    <img alt="" border="0" src="https://www.paypalobjects.com/en_GB/i/scr/pixel.gif" width="1" height="1">

</form>

Answer 1

您必须使用 paypal express checkout api 来执行此操作。

From paypal api documentation - https://developer.paypal.com/docs/classic/express-checkout/ht_ec-freeTrialRecurringPayments-curl-etc/

使用 api 方法 CreateRecurringPaymentsProfile 您可以更改:

1. RIALBILLINGPERIOD:一个试用期内的时间段。例如，一个月。
2. TRIALBILLINGFREQUENCY:一段时间内的收费频率(如果有)。
3. TRIALBILLINGFREQUENCY:一段时间内的收费频率(如果有)。
4. TRIALTOTALBILLINGCYCLES:试用期的长度。即试验的周期数。
5. TRIALAMT:试用期间的付款金额。例如，零。

要创建重复配置文件，请遵循以下 (PHP) 示例:

// Parameters for SetExpressCheckout, which will be sent to PayPal

$padata['L_BILLINGAGREEMENTDESCRIPTION0']   = 'Product description';
$padata['L_BILLINGAGREEMENTDESCRIPTION0']   = $padata['L_BILLINGAGREEMENTDESCRIPTION0'] . 
' $'.$product->price.'/month';
$padata['L_PAYMENTREQUEST_0_DESC0']         = $padata['L_BILLINGAGREEMENTDESCRIPTION0'] . 
' $'.$product->price.'/month';
$padata['PAYMENTREQUEST_0_NOTIFYURL']        = 'http://site_url/paypal/ipn';
$padata['PAYMENTREQUEST_0_DESC']            = $product->name;
$padata['RETURNURL']                        = 'http://site_url/paypal/returnurl';
$padata['CANCELURL']                        = 'http://site_url/paypal/cancelurl';

$padata['PAYMENTREQUEST_0_CURRENCYCODE']    = 'USD';
$padata['PAYMENTREQUEST_0_PAYMENTACTION']   = 'SALE';
$padata['PAYMENTREQUEST_0_ITEMAMT'] = $product->price;
$padata['PAYMENTREQUEST_0_AMT']      = $product->price;
$padata['L_BILLINGTYPE0']            = 'RecurringPayments';
$padata['L_PAYMENTREQUEST_0_NAME0']  = $product->name;
$padata['L_PAYMENTREQUEST_0_NUMBER0']= '322';
$padata['L_PAYMENTREQUEST_0_QTY0']  = '1';
$padata['L_PAYMENTREQUEST_0_AMT0']   = $product->price;


$paypal_data            = http_build_query($padata);
$httpParsedResponseAr   = $this->PPHttpPost('SetExpressCheckout', $paypal_data);

//Respond according to message we receive from Paypal
if("SUCCESS" == strtoupper($httpParsedResponseAr["ACK"]) || "SUCCESSWITHWARNING" == strtoupper($httpParsedResponseAr["ACK"])){

    //Redirect user to PayPal store with Token received.
    $paypalurl ='https://www.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token='.$httpParsedResponseAr["TOKEN"].'';
    header('Location: '.$paypalurl);

}else{
    echo 'Error : '.urldecode($httpParsedResponseAr["L_LONGMESSAGE0"]).'';


}

页面返回:

$hosteddata['L_BILLINGAGREEMENTDESCRIPTION0']   = 'Recurring Description';
$hosteddata['L_BILLINGAGREEMENTDESCRIPTION0']    = $hosteddata['L_BILLINGAGREEMENTDESCRIPTION0'] . ' $'.$pr->price.'/month';
$hosteddata['L_PAYMENTREQUEST_0_NAME0']         = $pr->name;
$hosteddata['PROFILEREFERENCE']                    = $GetExpressCheckoutDetails['L_PAYMENTREQUEST_0_NUMBER0'];
$hosteddata['PROFILESTARTDATE']                 = date('Y-m-d') . 'T' . date('H:i:s').'Z';
$hosteddata['SUBSCRIBERNAME']                    = $GetExpressCheckoutDetails['FIRSTNAME'] . ' ' . $GetExpressCheckoutDetails['LASTNAME'];
$hosteddata['TOKEN']                          = urlencode($_POST['token']);
$hosteddata['DESC']                               = $hosteddata['L_BILLINGAGREEMENTDESCRIPTION0'];
$hosteddata['AMT']                             = $pr->price;
$hosteddata['BILLINGPERIOD']                  = 'Month';
$hosteddata['BILLINGFREQUENCY']                  = '1';
$hosteddata['TOTALBILLINGCYCLES']                = '12';
$hosteddata['REGULARTOTALBILLINGCYCLES']        = '1';
$hosteddata['VERSION']                           = '74.0';
$hosteddata['MAXFAILEDPAYMENTS']              = '1';
$hosteddata['L_PAYMENTREQUEST_0_QTY0']           = '1';
$hosteddata['L_BILLINGTYPE0']                    = 'RecurringPayments';
$hosteddata['L_PAYMENTREQUEST_0_ITEMCATEGORY0']  = 'Digital';
$hosteddata['L_PAYMENTREQUEST_0_AMT0']         = $pr->price;
$hosteddata['INITAMT']                            = $pr->price;
$hosteddata['L_PAYMENTREQUEST_0_NUMBER0']     = $pr->id;
$hosteddata['PAYMENTREQUEST_0_NOTIFYURL']        = 'http://site_url/paypal/ipn';


$paypal_data = http_build_query($hosteddata);
$hosted_saas_response = $this->PPHttpPost('CreateRecurringPaymentsProfile', $paypal_data);

我使用了单独的方法将参数发送到paypal

private function PPHttpPost( $methodName_, $nvpStr_ ) {

$api_username   = 'yourpaypal@email.com';
$api_password   = 'QWEQWEWQEQWEQEQWE';
$api_signature   = 'WQEQWEQWEQWEWQEQWEQWEQWEQWEQWE.cT';
$api_endpoint    = "https://api-3t.paypal.com/nvp";
$version     = '124.0';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $api_endpoint);
   curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_POST, 1);
 
$nvpreq = "METHOD=$methodName_&VERSION=$version&PWD=$api_password&USER=$api_username&SIGNATURE=$api_signature&$nvpStr_";

curl_setopt($ch, CURLOPT_POSTFIELDS, $nvpreq);
$httpResponse = curl_exec($ch);

    if(!$httpResponse) {
        exit("$methodName_ failed: ".curl_error($ch).'('.curl_errno($ch).')');
}

    // Extract the response details.
    $httpResponseAr = explode("&", $httpResponse);

    $httpParsedResponseAr = array();
    foreach ($httpResponseAr as $i => $value) {
        $tmpAr = explode("=", $value);
        if(sizeof($tmpAr) > 1) {
            $httpParsedResponseAr[$tmpAr[0]] = $tmpAr[1];
         }
    }

    if((0 == sizeof($httpParsedResponseAr)) || !array_key_exists('ACK', $httpParsedResponseAr)) {

        exit("Invalid HTTP Response for POST request($nvpreq) to $api_endpoint.");

    }

    return $httpParsedResponseAr;

}