如何从PayPal获取自适应支付的Pay API密钥

Question

我一筹莫展，试图得到这项工作，但无法理解它。我必须使用自适应支付在一个网络应用程序，这是使用cakephp框架创建。我有API凭据，如API用户名、密码和签名。但我面临的主要问题是如何调用Pay API来获取API密钥，这是实现此功能所需的第一件事。我是新手，所以我对此没有太多的了解，在谷歌挖掘了很多之后，我提出了这个问题。谁能给出使用自适应支付的步骤..

提前感谢您的帮助！

Answer 1

您只需执行三个步骤：

1-向PayPal发送PayRequest消息

{"returnUrl":"http://example.com/returnURL.htm"，\ "requestEnvelope":{"errorLanguage":"en_US"}，"currencyCode":"USD"，\\ "amount":"10.00"，}}，"cancelUrl":"http://example.com/cancelURL.htm",\ "actionType":"PAY"}

2-您收到一个带有支付键的响应。

{"responseEnvelope":\ {“timestamp”：“39.383-06T14:30:39.383-07:00”，“ack”：“成功”，\ "correlationId":"cfe8f8783f1d3"，"build":"DEV"}，\ "payKey":"AP-17266198048308436"，“paymentExecStatus”：“已创建”}

3-您必须将发件人的浏览器重定向到PayPal才能批准付款。

这是步骤1的示例代码(它在我的本地服务器上工作)：

<?php

//turn php errors on
ini_set("track_errors", true);

//set PayPal Endpoint to sandbox
$url = trim("https://svcs.sandbox.paypal.com/AdaptivePayments/Pay");

$api_appid = 'APP-80W284485P519543T';   // para sandbox

//PayPal API Credentials
$API_UserName = "sbapi_1287090601_biz_api1.paypal.com"; //TODO
$API_Password = "1287090610"; //TODO
$API_Signature = "ANFgtzcGWolmjcm5vfrf07xVQ6B9AsoDvVryVxEQqezY85hChCfdBMvY"; //TODO
$receiver_email = "fake@email.com"; //TODO
$amount = 25; //TODO

//Default App ID for Sandbox    
$API_AppID = "APP-80W284485P519543T";

$API_RequestFormat = "NV";
$API_ResponseFormat = "NV";


//Create request payload with minimum required parameters
$bodyparams = array (   "requestEnvelope.errorLanguage" => "en_US",
                  "actionType" => "PAY",
                  "cancelUrl" => "http://cancelUrl",
                  "returnUrl" => "http://returnUrl",
                  "currencyCode" => "EUR",
                  "receiverList.receiver.email" => $receiver_email,
                  "receiverList.receiver.amount" => $amount
    );

// convert payload array into url encoded query string
$body_data = http_build_query($bodyparams, "", chr(38));


try
{

//create request and add headers
$params = array("http" => array(
    "method" => "POST",                                                 
    "content" => $body_data,                                             
    "header" =>  "X-PAYPAL-SECURITY-USERID: " . $API_UserName . "\r\n" .
                 "X-PAYPAL-SECURITY-SIGNATURE: " . $API_Signature . "\r\n" .
                 "X-PAYPAL-SECURITY-PASSWORD: " . $API_Password . "\r\n" .
                 "X-PAYPAL-APPLICATION-ID: " . $API_AppID . "\r\n" .
                 "X-PAYPAL-REQUEST-DATA-FORMAT: " . $API_RequestFormat . "\r\n" .
                 "X-PAYPAL-RESPONSE-DATA-FORMAT: " . $API_ResponseFormat . "\r\n"
));


//create stream context
 $ctx = stream_context_create($params);


//open the stream and send request
 $fp = @fopen($url, "r", false, $ctx);

//get response
 $response = stream_get_contents($fp);

//check to see if stream is open
 if ($response === false) {
    throw new Exception("php error message = " . "$php_errormsg");
 }

//close the stream
 fclose($fp);

//parse the ap key from the response

$keyArray = explode("&", $response);

foreach ($keyArray as $rVal){
    list($qKey, $qVal) = explode ("=", $rVal);
        $kArray[$qKey] = $qVal;
}

//print the response to screen for testing purposes
If ( $kArray["responseEnvelope.ack"] == "Success") {

     foreach ($kArray as $key =>$value){
    echo $key . ": " .$value . "<br/>";
}
 }
else {
    echo 'ERROR Code: ' .  $kArray["error(0).errorId"] . " <br/>";
  echo 'ERROR Message: ' .  urldecode($kArray["error(0).message"]) . " <br/>";
}

}


catch(Exception $e) {
echo "Message: ||" .$e->getMessage()."||";
}

?>

这里有很多示例：https://www.x.com/developers/paypal/documentation-tools/paypal-code-samples