What are the recommended steps for integrating the PayPal API with PHP for payment processing?

To integrate the PayPal API with PHP for payment processing, you need to follow these steps: 1. Set up a PayPal developer account and obtain API credentials. 2. Install the PayPal PHP SDK or use cURL to make API requests. 3. Implement the necessary API calls for processing payments. 

// Include the PayPal PHP SDK
require 'vendor/autoload.php';

use PayPal\Api\Amount;
use PayPal\Api\Payer;
use PayPal\Api\Payment;
use PayPal\Api\RedirectUrls;
use PayPal\Api\Transaction;

// Set up API credentials
$apiContext = new \PayPal\Rest\ApiContext(
    new \PayPal\Auth\OAuthTokenCredential(
        'CLIENT_ID',
        'CLIENT_SECRET'
    )
);

// Create a payment
$payer = new Payer();
$payer->setPaymentMethod('paypal');

$amount = new Amount();
$amount->setTotal('10.00');
$amount->setCurrency('USD');

$transaction = new Transaction();
$transaction->setAmount($amount);

$redirectUrls = new RedirectUrls();
$redirectUrls->setReturnUrl('http://example.com/success')
    ->setCancelUrl('http://example.com/cancel');

$payment = new Payment();
$payment->setIntent('sale')
    ->setPayer($payer)
    ->setTransactions([$transaction])
    ->setRedirectUrls($redirectUrls);

try {
    $payment->create($apiContext);
    $approvalUrl = $payment->getApprovalLink();
    header("Location: $approvalUrl");
} catch (Exception $e) {
    echo $e->getMessage();
}

Keywords

PayPal API PHP integration payment processing SDK error handling

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