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paypal-purchase.class.php
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paypal-purchase.class.php
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<?php
/**
* A PayPal Purchase object for the Digital Goods with Express Checkout API.
*
* @package PayPal
* @subpackage Purchase
*
* @license GPLv3 see license.txt
* @copyright 2011 Leonard's Ego Pty. Ltd.
*/
require_once( 'paypal-digital-goods.class.php' );
class PayPal_Purchase extends PayPal_Digital_Goods {
/**
* Details of the items in this particular purchase.
*/
private $purchase;
/**
* Creates a PayPal Digital Goods Object configured according to the parameters in the args associative array.
*
* Available $args parameters:
* - purchase_details, array, details of the purchase.
* - description, string, (Optional) Description of items the buyer is purchasing.
* Transaction Totals:
* - amount, double, required. Total cost of the transaction to the buyer.
* - tax, double, default 0.00. The sum of tax for all items in this order.
* - invoice_number, string, (Optional) Your own invoice or tracking number. Can be up to 127 single-byte alphanumeric characters.
* Item details:
* - items array, An array of arrays for each item in this transaction.
* - item_name, string, Item name.
* - item_description, string, (Optional) Item description.
* - item_amount, string, (Optional) Cost of this individual item.
* - item_quantity, string, default 1. Number of this specific item.
* - item_tax, string, (Optional) Sales tax of this individual item.
* - item_number, string, (Optional) Your own invoice or tracking number. Can be up to 127 single-byte alphanumeric characters.
* Miscellaneous
* - custom (Optional) A free-form field for your own use.
*
* @todo Allow purchase details to include more than one item.
*
* @param args, named parameters to customise the subscription and checkout process. See description for available parameters.
*/
public function __construct( $purchase_details = array() ){
$purchase_defaults = array(
'name' => 'Digital Good',
'description' => '',
// Price
'amount' => '5.00',
'tax_amount' => '0.00',
'invoice_number' => '',
'number' => '',
'items' => array(),
'custom' => '',
);
$purchase_details = array_merge( $purchase_defaults, $purchase_details );
// Make it super simple to create a single item transaction
if( empty( $purchase_details['items'] ) )
$purchase_details['items'] = array( array(
'item_name' => $purchase_details['name'],
'item_description' => $purchase_details['description'],
'item_amount' => $purchase_details['amount'],
'item_tax' => $purchase_details['tax_amount'],
'item_quantity' => 1,
'item_number' => $purchase_details['number']
) );
$this->purchase = (object)$purchase_details;
parent::__construct();
}
/**
* Makes a payment by calling the PayPal DoExpressCheckoutPayment API operation.
*
* After an express checkout transaction has been created in request_checkout_token, this function can
* be called to complete the transaction.
*
* This function returned the response from PayPal, which includes a profile ID (PROFILEID). You should
* save this profile ID to aid with changing and
*
* @return array(
* [TOKEN] => EC-XXXX
* [SUCCESSPAGEREDIRECTREQUESTED] => false
* [TIMESTAMP] => YYYY-MM-DDTHH:MM:SSZ
* [CORRELATIONID] => XXXX
* [ACK] => Success
* [VERSION] => 76.0
* [BUILD] => 2271164
* [INSURANCEOPTIONSELECTED] => false
* [SHIPPINGOPTIONISDEFAULT] => false
* [PAYMENTINFO_0_TRANSACTIONID] => XXXX
* [PAYMENTINFO_0_TRANSACTIONTYPE] => cart
* [PAYMENTINFO_0_PAYMENTTYPE] => instant
* [PAYMENTINFO_0_ORDERTIME] => YYYY-MM-DDTHH:MM:SSZ
* [PAYMENTINFO_0_AMT] => XX.00
* [PAYMENTINFO_0_FEEAMT] => 0.XX
* [PAYMENTINFO_0_TAXAMT] => 0.00
* [PAYMENTINFO_0_CURRENCYCODE] => USD
* [PAYMENTINFO_0_PAYMENTSTATUS] => Completed | None | Denied | Expired | Failed | In-Progress | Partially-Refunded | Pending | Refunded | Reversed | Processed | Voided
* [PAYMENTINFO_0_PENDINGREASON] => None
* [PAYMENTINFO_0_REASONCODE] => None
* [PAYMENTINFO_0_PROTECTIONELIGIBILITY] => Ineligible
* [PAYMENTINFO_0_PROTECTIONELIGIBILITYTYPE] => None
* [PAYMENTINFO_0_SECUREMERCHANTACCOUNTID] => XXXX
* [PAYMENTINFO_0_ERRORCODE] => 0
* [PAYMENTINFO_0_ACK] => Success
* )
*/
public function process_payment(){
return $this->call_paypal( 'DoExpressCheckoutPayment' );
}
/**
* A wrapper for the process_payment function to implement the unified Digital Goods API.
*/
public function process(){
return $this->process_payment();
}
/**
* Returns information about a purchase transaction by calling the PayPal GetTransactionDetails API method.
*
* @param $profile_id, string. The profile ID of the subscription for which the details should be looked up.
* @return array (
* [RECEIVEREMAIL] => [email protected]
* [RECEIVERID] => XXXX
* [EMAIL] => [email protected]
* [PAYERID] => XXXX
* [PAYERSTATUS] => verified
* [COUNTRYCODE] => US
* [ADDRESSOWNER] => PayPal
* [ADDRESSSTATUS] => None
* [SALESTAX] => 0.00
* [SUBJECT] => Example Digital Good Purchase
* [TIMESTAMP] => YYYY-MM-DDTHH:MM:SSZ
* [CORRELATIONID] => XXXX
* [ACK] => Success
* [VERSION] => 76.0
* [BUILD] => 2230381
* [FIRSTNAME] => Test
* [LASTNAME] => User
* [TRANSACTIONID] => XXXX
* [TRANSACTIONTYPE] => cart
* [PAYMENTTYPE] => instant
* [ORDERTIME] => YYYY-MM-DDTHH:MM:SSZ
* [AMT] => XX.00
* [FEEAMT] => 0.XX
* [TAXAMT] => 0.00
* [SHIPPINGAMT] => 0.00
* [HANDLINGAMT] => 0.00
* [CURRENCYCODE] => USD
* [PAYMENTSTATUS] => Completed
* [PENDINGREASON] => None
* [REASONCODE] => None
* [PROTECTIONELIGIBILITY] => Ineligible
* [PROTECTIONELIGIBILITYTYPE] => None
* [L_NAME0] => Digital Good Example
* [L_QTY0] => 1
* [L_SHIPPINGAMT0] => 0.00
* [L_HANDLINGAMT0] => 0.00
* [L_CURRENCYCODE0] => USD
* [L_AMT0] => XX.00
* )
*/
public function get_transaction_details( $transaction_id ){
return $this->call_paypal( 'GetTransactionDetails', $transaction_id );
}
/**
* A wrapper for the get_transaction_details function implementing the unified API.
*
* Accepts either a get_transaction_details ID or a $response array as returned
* from the SetExpressCheckout call.
*/
public function get_details( $transaction ){
if ( is_array( $transaction ) && isset( $transaction['PAYMENTINFO_0_TRANSACTIONID'] ) )
$transaction = $transaction['PAYMENTINFO_0_TRANSACTIONID'];
return $this->get_transaction_details( $transaction );
}
/**
* Overloads the base class's get_payment_details_url to map the subscription details
* to the PayPal NVP format for posting to PayPal.
*
* The function first calls the Parent's get_payment_details_url, which takes care of
* common NVP fields, like API credentials. It then appends subscription related fields.
*
* Note: The SetExpressCheckout action URL is partially built in the base class as it contains
* NVP fields common to both Purchases & Subscriptions.
*
* @param $action, string. The PayPal NVP API action to create the URL for. One of SetExpressCheckout, DoExpressCheckoutPayment or GetTransactionDetails.
* @param $transaction_id, (optional) string. A PayPal Transaction ID, required for the GetTransactionDetails operation.
* @return string A URI which can be use in the @see call_paypal() method to perform the appropriate API operation.
*/
protected function get_payment_details_url( $action, $transaction_id = '' ){
// Setup the Payment Details
$api_request = parent::get_payment_details_url( $action, $transaction_id );
// Parameters to Request Recurring Payment Token
if( 'SetExpressCheckout' == $action ) {
$api_request .= '&PAYMENTREQUEST_0_CURRENCYCODE=' . urlencode( $this->currency ) // A 3-character currency code (default is USD).
. '&PAYMENTREQUEST_0_PAYMENTACTION=Sale' // From PayPal: When implementing digital goods, this field is required and must be set to Sale.
// Payment details
. '&PAYMENTREQUEST_0_AMT=' . $this->purchase->amount // (Required) Total cost of the transaction to the buyer. If tax charges are known, include them in this value. If not, this value should be the current sub-total of the order. If the transaction includes one or more one-time purchases, this field must be equal to the sum of the purchases.
. '&PAYMENTREQUEST_0_ITEMAMT=' . ( $this->purchase->amount - $this->purchase->tax_amount ) // (Required) Sum of cost of all items in this order.
. '&PAYMENTREQUEST_0_TAXAMT=' . $this->purchase->tax_amount // (Optional) Sum of tax for all items in this order
. '&PAYMENTREQUEST_0_DESC=' . urlencode( $this->purchase->description ); // (Optional) Description of items the buyer is purchasing.
// Maybe add an Invoice number
if( ! empty( $this->purchase->invoice_number ) )
$api_request .= '&PAYMENTREQUEST_0_INVNUM=' . $this->purchase->invoice_number; // (Optional) Your own invoice or tracking number.
// Maybe add an IPN URL
if( ! empty( $this->notify_url ) )
$api_request .= '&PAYMENTREQUEST_0_NOTIFYURL=' . urlencode( $this->notify_url );
// Maybe add a custom field
if( ! empty( $this->purchase->custom ) )
$api_request .= '&PAYMENTREQUEST_0_CUSTOM=' . urlencode( $this->purchase->custom );
// Item details
$item_count = 0;
foreach( $this->purchase->items as $item ) {
$api_request .= '&L_PAYMENTREQUEST_0_ITEMCATEGORY'.$item_count.'=Digital'
. '&L_PAYMENTREQUEST_0_NAME'.$item_count.'=' . urlencode( $item['item_name'] )
. '&L_PAYMENTREQUEST_0_AMT'.$item_count.'=' . $item['item_amount']
. '&L_PAYMENTREQUEST_0_QTY'.$item_count.'=' . $item['item_quantity'];
if( ! empty( $item['item_description'] ) )
$api_request .= '&L_PAYMENTREQUEST_0_DESC'.$item_count.'=' . urlencode( $item['item_description'] );
if( ! empty( $item['item_tax'] ) )
$api_request .= '&L_PAYMENTREQUEST_0_TAXAMT'.$item_count.'=' . $item['item_tax'];
if( ! empty( $item['item_number'] ) )
$api_request .= '&L_PAYMENTREQUEST_0_NUMBER'.$item_count.'=' . $item['item_number'];
$item_count++;
}
} elseif ( 'DoExpressCheckoutPayment' == $action ) {
$api_request .= '&METHOD=DoExpressCheckoutPayment'
. '&TOKEN=' . $this->token
. '&PAYERID=' . $_GET['PayerID']
// Payment details
. '&PAYMENTREQUEST_0_CURRENCYCODE=' . urlencode( $this->currency )
. '&PAYMENTREQUEST_0_PAYMENTACTION=Sale' // From PayPal: When implementing digital goods, this field is required and must be set to Sale.
// Payment details
. '&PAYMENTREQUEST_0_AMT=' . $this->purchase->amount // (Required) Total cost of the transaction to the buyer. If tax charges are known, include them in this value. If not, this value should be the current sub-total of the order. If the transaction includes one or more one-time purchases, this field must be equal to the sum of the purchases.
. '&PAYMENTREQUEST_0_ITEMAMT=' . ( $this->purchase->amount - $this->purchase->tax_amount ) // (Required) Sum of cost of all items in this order.
. '&PAYMENTREQUEST_0_TAXAMT=' . $this->purchase->tax_amount // (Optional) Sum of tax for all items in this order
. '&PAYMENTREQUEST_0_DESC=' . urlencode( $this->purchase->description ); // (Optional) Description of items the buyer is purchasing.
// Maybe add an Invoice number
if( ! empty( $this->purchase->invoice_number ) )
$api_request .= '&PAYMENTREQUEST_0_INVNUM=' . $this->purchase->invoice_number; // (Optional) Your own invoice or tracking number.
// Maybe add an IPN URL
if( ! empty( $this->notify_url ) )
$api_request .= '&PAYMENTREQUEST_0_NOTIFYURL=' . urlencode( $this->notify_url );
// Maybe add a custom field
if( ! empty( $this->purchase->custom ) )
$api_request .= '&PAYMENTREQUEST_0_CUSTOM=' . urlencode( $this->purchase->custom );
// Item details
$item_count = 0;
foreach( $this->purchase->items as $item ) {
$api_request .= '&L_PAYMENTREQUEST_0_ITEMCATEGORY'.$item_count.'=Digital'
. '&L_PAYMENTREQUEST_0_NAME'.$item_count.'=' . urlencode( $item['item_name'] )
. '&L_PAYMENTREQUEST_0_AMT'.$item_count.'=' . $item['item_amount']
. '&L_PAYMENTREQUEST_0_QTY'.$item_count.'=' . $item['item_quantity'];
if( ! empty( $item['item_description'] ) )
$api_request .= '&L_PAYMENTREQUEST_0_DESC'.$item_count.'=' . urlencode( $item['item_description'] );
if( ! empty( $item['item_tax'] ) )
$api_request .= '&L_PAYMENTREQUEST_0_TAXAMT'.$item_count.'=' . $item['item_tax'];
if( ! empty( $item['item_number'] ) )
$api_request .= '&L_PAYMENTREQUEST_0_NUMBER'.$item_count.'=' . $item['item_number'];
$item_count++;
}
} elseif ( 'GetTransactionDetails' == $action ) {
$api_request .= '&METHOD=GetTransactionDetails'
. '&TRANSACTIONID=' . urlencode( $transaction_id );
}
return $api_request;
}
/**
* Returns a string representing the price for the purchase, including currency code. For example "$10".
*/
public function get_purchase_price() {
return $this->get_currency_symbol() . $this->purchase->amount;
}
/**
* Get the description for this subscription
*/
public function get_description(){
return $this->purchase->description;
}
}