AddPaymentCard.php

<?php
// Include required library files.
require_once('includes/config.php');
require_once('includes/paypal.class.php');

// Create PayPal object.
$PayPalConfig = array(
					  'Sandbox' => $sandbox,
					  'DeveloperAccountEmail' => $developer_account_email,
					  'ApplicationID' => $application_id,
					  'DeviceID' => $device_id,
					  'IPAddress' => $_SERVER['REMOTE_ADDR'],
					  'APIUsername' => $api_username,
					  'APIPassword' => $api_password,
					  'APISignature' => $api_signature,
					  'APISubject' => $api_subject
					);

$PayPal = new PayPal_Adaptive($PayPalConfig);

// Prepare request arrays
$AddPaymentCardFields = array(
								'AccountID' => '', 												// The ID number of the PayPal account for which the payment card is being added.  You must specify either AccountID or EmailAdddress
								'CardNumber' => '', 											// Required.  The credit card number.
								'CardOwnerDateOfBirth' => '', 									// The date of birth of the card holder.
								'CardType' => '', 												// Required.  The type of card being added.  Values are:  Visa, MasterCard, AmericanExpress, Discover, SwitchMaestro, Solo, CarteAurore, CarteBleue, Cofinoga, 4etoiles, CarteAura, TarjetaAurora, JCB
								'CardVerificationNumber' => '', 								// The verification code for the card.  Generally required for calls where ConfirmationType is set to NONE.  With the appropriate account review, this param is optional.
								'ConfirmationType' => '', 										// Required.  Whether the account holder is redirected to PayPal.com to confirm the card addition.  Values are:  WEB, NONE
								'CreateAccountKey' => '', 										// The key returned in a CreateAccount response.  Required for calls where the ConfirmationType is NONE.
								'EmailAddress' => '', 											// Email address of the account holder adding the card.  Must specify either AccountID or EmailAddress.
								'IssueNumber' => '', 											// The 2-digit issue number for Switch, Maestro, and Solo cards.
								'StartDate' => '' 												// The element containing the start date for the payment card.
							);
							
$NameOnCard = array(
					'Salutation' => '', 														// A salutation for the card owner.
					'FirstName' => '', 															// Required.  First name of the card holder.
					'MiddleName' => '', 														// Middle name of the card holder.
					'LastName' => '', 															// Required.  Last name of the card holder.
					'Suffix' => ''																// A suffix for the card holder.
					);
							
$BillingAddress = array(
						'Line1' => '', 															// Required.  Billing street address.
						'Line2' => '', 															// Billing street address 2
						'City' => '', 															// Required.  Billing city.
						'State' => '', 															// Billing state.
						'PostalCode' => '',														// Billing postal code
						'CountryCode' => ''														// Required.  Billing country code.
						);

$ExpirationDate = array(
						'Month' => '', 															// Expiration month.
						'Year' => ''															// Required.  Expiration Year.
						);
							
$WebOptions = array(
					'CancelURL' => '', 															// The URL to which the user is returned when they cancel the flow at PayPal.com
					'CancelURLDescription' => '', 												// A description for the CancelURL
					'ReturnURL' => '', 															// The URL to which the user is returned when they complete the process.
					'ReturnURLDescription' => ''												// A description for the ReturnURL
					);

$PayPalRequestData = array(
						   'AddPaymentCardFields' => $AddPaymentCardFields, 
						   'NameOnCard' => $NameOnCard, 
						   'BillingAddress' => $BillingAddress, 
						   'ExpirationDate' => $ExpirationDate, 
						   'WebOptions' => $WebOptions
						   );

// Pass data into class for processing with PayPal and load the response array into $PayPalResult
$PayPalResult = $PayPal->AddPaymentCard($PayPalRequestData);

// Write the contents of the response array to the screen for demo purposes.
echo '<pre />';
print_r($PayPalResult);
?>