Paypal訂閱與較低的首付款額，折扣，與Rest api？

Question

我們正在使用結算協議與休息API，我們能夠成功地在沙箱上做到這一點。 現在我們有要求在第一個月的折扣， ，所以如果每月有100美元的協議，並且當用戶申請一些推薦優惠券，他將在第一個月得到10美元的折扣.ie應該收取90美元第一個月和100美元在協議期限前進。 除了設置費用之外，我看不到任何其他選項，但這隻能用於支付額外費用，即增加計劃數量但不少於一些。

Answer 1

您必須使用paypal express checkout api來執行此操作。

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：時間在一個試用期期限。例如，一個月。
2. TRIALBILLINGFREQUENCY：收費頻率（如果有）在一段時期內。
3. TRIALBILLINGFREQUENCY：收費頻率（如果有）在一段時期內。
4. TRIALTOTALBILLINGCYCLES：試用期限。也就是說，審判期間的數量。
5. TRIALAMT：試用期內的付款金額。例如，零。

您必須設置參數$ fields ['INITAMT'] = $ 10;和經常性支付$ 100的月其他參數：

 
$fields['INITAMT'] = 10;
$fields['L_PAYMENTREQUEST_0_AMT0'] = 100;
$fields['AMT'] = 100; 

在這種情況下，你會立即，之後每個月將收取$ 100的定期付款收取10 $。

這裏一個簡單的（PHP）例如如何設定交易與幾個產品（也定期付款）：腳本後

 
// 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; 
$padata['L_PAYMENTREQUEST_0_NAME1']  = 'Second Product name';
$hosteddata['L_PAYMENTREQUEST_0_DESC1'] = 'second product description';
$hosteddata['L_PAYMENTREQUEST_0_NUMBER1'] = $secondproduct->id;
$hosteddata['L_PAYMENTREQUEST_0_QTY1']  = '1';
$hosteddata['L_PAYMENTREQUEST_0_AMT1']  = $secondproduct->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"]).'';
 

} 

上RETURNURL獲取令牌：

 
$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';
 
$padata['L_PAYMENTREQUEST_0_NAME1']  = 'Second Product name'; 
$hosteddata['L_PAYMENTREQUEST_0_DESC1']   = 'second product description';
$hosteddata['L_PAYMENTREQUEST_0_NUMBER1']  = $secondproduct->id;
$hosteddata['L_PAYMENTREQUEST_0_QTY1']   = '1';
$hosteddata['L_PAYMENTREQUEST_0_AMT1']   = $secondproduct->price; 

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

我用一個單獨的方法發佈參數到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;
 
}