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Unzer

Authorize a payment

Reserve money on the customer’s payment account.

Overview

The authorization call verifies payment details and checks for sufficient funds on the customer account. If the check is successful, the funds are reserved for at least 7 days. If the authorization is not debited within this period, the authorization expires and the amount is released.

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The authorization does not trigger a debit transaction. It only reserves the amount for the customer’s payment type. To execute money transfer you have to perform a charge after authorization.

This transaction is possible for selected payment methods only. For more details, see Payment methods.

Example

In general, the authorization call on a payment type instance requires at least the amount, the currency and the returnUrl.

$unzer     = new UnzerSDK\Unzer('s-priv-xxxxxxxxxx');

$authorizationInstance = new Authorization(100.00, 'EUR', $returnUrl);
$transaction = $unzer->performAuthorization($authorizationInstance, 's-crd-9wmri5mdlqps');
$unzer     = new UnzerSDK\Unzer('s-priv-xxxxxxxxxx');
$card      = $unzer->fetchPaymentType('s-crd-9wmri5mdlqps');
$authorize = $card->authorize(100.0, 'EUR', 'https://your.return.url');

Arguments to Unzer::performAuthorization

Expand/Collapse argument list
Parameter Type Description
authorization
(required)
Authorization The Authorization object containing transaction specific information.
paymentType
(required)
BasePaymentType | string The PaymentType object or the ID of the PaymentType to use.
customer* Customer |string A reference to the customer resource corresponding to this payment.
This can be either a customer object or the ID of an existing customer resource.
For more details, see Manage customer.
metadata* Metadata The Metadata object containing custom information for the payment.
basket* Basket A reference to the basket corresponding to this payment.
For more details, see Manage baskets.
* If an object is used, the ID for which is not set (the resource is currently not available in the Payment API), the customer resource is automatically created and referenced with the transaction call.

Properties of Authorization for Payment requests

The list below contains properties that are relevant for an authorization transaction.

Expand/Collapse property list
Parameter Type Description
amount
(required)
float The amount to be authorized.
currency
(required)
string The currency of the amount.
returnUrl
(required)
string The URL to which the customer will be redirected, after the transaction is complete.
orderId string The ID of the order in your store.
This ID can be used later to fetch the payment resource from the API using the method Unzer::fetchPaymentByOrderId("myId123")
card3ds boolean Allows to switch between a 3DS and non-3DS channel, if both are configured for the merchant. Otherwise it will be ignored.
invoiceId string This is used to transmit the invoice ID from your shop to the API. For Unzer Invoice payments, the invoice ID is required.
paymentReference string This is a reference string to show the customer the purpose of the transaction. This will be shown on the bank statement of the buyer.

[Deprecated] Arguments to Unzer::authorize

Expand/Collapse argument list
Parameter Type Description
amount
(required)
float The amount to be authorized.
currency
(required)
string The currency of the amount.
paymentType
(required)
string The payment type object or the ID of the payment type to use.
returnUrl
(required)
string The URL to which the customer will be redirected, after the transaction is complete.
customer* string A reference to the customer resource corresponding to this payment.
This can be either a customer object or the ID of an existing customer resource.
For more details, see Manage customer.
orderId string The ID of the order in your store.
This ID can be used later to fetch the payment resource from the API using the method Unzer::fetchPaymentByOrderId("myId123")
metadata* string A reference to the metadata corresponding to this payment.
The metadata object can be used to pass along custom information which you wish to reference to the payment.
For more details, see Manage metadata.
basket* string A reference to the basket corresponding to this payment.
For more details, see Manage baskets.
card3ds boolean Allows to switch between a 3DS and non-3DS channel, if both are configured for the merchant. Otherwise it will be ignored.
invoiceId string This is used to transmit the invoice ID from your shop to the API. For Unzer Invoice payments, the invoice ID is required.
paymentReference string This is a reference string to show the customer the purpose of the transaction. This will be shown on the bank statement of the buyer.
recurrenceType string Recurrence type used for recurring payment.
Available values: scheduled, unscheduled, one click
* If an object is used, the ID for which is not set (the resource is currently not available in the Payment API), the customer resource is automatically created and referenced with the transaction call.

Arguments to authorize of payment type instance

Expand/Collapse argument list
Parameter Type Description
amount
(required)
float The amount to be reserved on the customers payment account.
currency
(required)
string The currency of the amount.
returnUrl string The URL to which the customer will be redirected, after the transaction is complete.
This needs to be set to a valid URL, no matter whether a redirect is necessary or not.
customer* string A reference to the customer resource corresponding to this payment.
For more details, see Manage customer.
orderId string The ID of the order in your store.
This ID can be used later to fetch the payment resource from API using the method Unzer::fetchPaymentByOrderId("myId123")
metadata* string A reference to the metadata corresponding to this payment.
The metadata object can be used to pass along custom information which you wish to reference to the payment.
For more details, see Manage metadata.
basket* string A reference to the basket corresponding to this payment.
For more details, see Manage baskets.
card3ds boolean Allows to switch between a 3DS and non-3DS channel, if both are configured for the merchant. Otherwise, it is ignored.
invoiceId string This is used to transmit the invoice ID from your shop to the API. For Unzer Invoice payments, the invoice ID is required.
paymentReference string This is a reference string to show the customer the purpose of the transaction. This will be shown on the bank statement of the buyer.
recurrenceType string Recurrence type used for recurring payment.
Available values: scheduled, unscheduled, one-click
* If an object is used, the ID for which is not set (the resource is currently not available in the Payment API), the customer resource is automatically created and referenced with the transaction call.

Transaction results

Transaction results

The authorization object is updated with the data from the payment API response. It contains the paymentId (for example, s-pay-1), the transactionId, and other properties. The transaction object provides getter functions to access these properties.

The properties isSuccess, isPending and isError indicate the result of the transaction. Only one of these three can be true.

If the transaction fails, the payment API returns an error resource. In the SDK, this is handled as an UnzerSDK\Exceptions\UnzerApiException. Make sure to catch the exception type and handle it as properly.

For an example transaction, see Authorize a payment.

try {
    $unzer     = new UnzerSDK\Unzer('s-priv-xxxxxxxxxx');
    
    $authorizationInstance = new Authorization(100.00, 'EUR', $returnUrl);
    $transaction = $unzer->performAuthorization($authorizationInstance, 's-crd-9wmri5mdlqps');

    if ($transaction->isSuccess) {
        $this->handleSuccessState(); // e.g. redirect to the success page in your shop
    }
    // Transaction has to be pending at this point.
    $this->handlePendingState(); // e.g. redirect to the pending page in your shop
} catch (UnzerApiException $e) {
    // Transaction failed. API returned error resource.
    $this->log($e->getClientMessage());
    $this->log($e->getMerchantMessage());
    $this->handleFailureState(); // e.g. redirect to the failure page of your shop
} catch (RuntimeException $e) {
    $merchantMessage = $e->getMessage();
}

See also