angelleye / paypal-php-library定期付款

Question

here is the angelleye paypal library

$PayPal = new angelleye\PayPal\PayPal($PayPalConfig);

$GRPPDFields = array(
                   'profileid' => 'I-3WEY3EAYCV0R'          // Profile ID of the profile you want to get details for.
                   );

$PayPalRequestData = array('GRPPDFields'=>$GRPPDFields);


$PayPalResult =
$PayPal->GetRecurringPaymentsProfileDetails($PayPalRequestData);


?>

这是经常性付款样本api。但我是新手，并且不知道如何在按钮点击上集成php4。请帮我解决这个问题