PayPal PHP SDK executes billing agreement even if setup fee fails

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* I think overriding should be optional since they currently precisely match the given * plan's data. So for this particular plan, if I deleted everything between these comment * blocks, nothing bad should happen. *

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*/ $preferences = new MerchantPreferences(); $preferences->setReturnUrl("https://www.example.com/actually-a-valid-site") ->setCancelUrl("https://www.example.com/actually-a-valid-site") ->setAutoBillAmount('no') ->setInitialFailAmountAction('CANCEL'); $agreement->setOverrideMerchantPreferences($preferences); /** *

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*

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*/ $payer = new Payer(); $payer->setPaymentMethod('paypal'); $agreement->setPayer($payer); $agreement = $agreement->create($apiContext); $approvalUrl = $agreement->getApprovalLink(); // This takes us to PayPal to login and confirm payment. header("Location: ".$approvalUrl);|||// Step 2: https://paypal.github.io/PayPal-PHP-SDK/sample/doc/billing/ExecuteAgreement.html use PayPal\Api\Agreement; /** * @var \PayPal\Rest\ApiContext $apiContext */ try { $agreement = new Agreement(); $agreement->execute($_GET['token'], $apiContext); $agreement = Agreement::get($agreement->getId(), $apiContext); /** * I assume at this point the agreement is executed successfully. Yet, the setup fee does not * have to be paid for us to get here. This behavior is verified on live. */ } catch (\Exception $e) { // Do something. }|||use PayPal\Api\Currency; use PayPal\Api\MerchantPreferences; use PayPal\Api\Patch; use PayPal\Api\PatchRequest; use PayPal\Api\PaymentDefinition; use PayPal\Api\Plan; use PayPal\Common\PayPalModel; $plan = new Plan(); $plan->setName('Test Name') ->setDescription('Test Description') ->setType('INFINITE'); $payment_definition = new PaymentDefinition(); $payment_definition->setName('Regular Payments') ->setType('REGULAR') ->setFrequency('YEAR') ->setFrequencyInterval(1) ->setCycles('0') ->setAmount(new Currency(['value' => '29.99', 'currency' => 'USD'])); $merchant_preferences = new MerchantPreferences(); $merchant_preferences->setReturnUrl'https://insert.actual.url.here') ->setCancelUrl('https://insert.actual.url.here') ->setAutoBillAmount('NO') ->setInitialFailAmountAction('CANCEL') ->setMaxFailAttempts('1') ->setSetupFee(new Currency(['value' => '29.99', 'currency' => 'USD'])); $plan->setPaymentDefinitions([$payment_definition]); $plan->setMerchantPreferences($merchant_preferences); $request = clone $plan; try { /** * @var \Paypal\Rest\ApiContext $apiContext */ $plan->create($apiContext); $patch = new Patch(); $value = new PayPalModel(['state' => 'ACTIVE']); $patch->setOp('replace') ->setPath('/') ->setValue($value); $patchRequest = new PatchRequest(); $patchRequest->addPatch($patch); if (!$plan->update($patchRequest, $apiContext)) { throw new \Exception("Failed to apply patch to plan."); } // Done. } catch (\Exception $e) { // Some error handling. exit; }

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Solution:

The replacement SDK is https://github.com/paypal/Checkout-PHP-SDK , which does not include any billing agreement or subscription use cases. For use cases not covered by that SDK , you should use a direct HTTPS integration. This is documented here: https://developer.paypal.com/docs/api/rest-sdks/

The code you are trying to use is for an obsolete SDK for an obsolete API (old version of billing agreements, not compatible with new subscriptions).

Here is the API you should integrate, with no SDK: https://developer.paypal.com/docs/subscriptions/

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Solution:

Turns out an exception is not supposed to be thrown for usual agreement execution. To check whether the setup was paid, check the value of$agreement->getState() after executing the agreement.

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