Create a new "REST API App" in the dashboard to get your Client ID and Client Secret . 2. Frontend: The Checkout Page
The frontend uses the PayPal JavaScript SDK to render smart payment buttons. This handles the UI and initial authorization.
paypal.Buttons({ // 1. Create the order createOrder: function(data, actions) { return actions.order.create({ purchase_units: [{ amount: { value: '10.00' } // Total amount }] }); }, // 2. Handle the approval onApprove: function(data, actions) { return actions.order.capture().then(function(details) { // Send transaction data to your PHP server via AJAX return fetch('process_payment.php', { method: 'POST', body: JSON.stringify({ orderID: data.orderID, transactionID: details.id, status: details.status }) }).then(response => { window.location.href = "success.php"; }); }); } }).render('#paypal-button-container'); Use code with caution. 3. Backend: Processing the Payment ( process_payment.php ) Create a new "REST API App" in the
Before writing code, you must obtain API credentials from the PayPal Developer Dashboard :
'success']); } else { echo json_encode(['status' => 'error']); } ?> Use code with caution. 4. Key Integration Components This handles the UI and initial authorization
Once the payment is approved on the client side, you must verify and store the transaction details in your database using PHP.
Integrating a PayPal payment gateway into your PHP application is a critical step for any e-commerce platform. While there are several methods, the most modern and secure approach as of 2024-2025 involves using the PayPal Standard Checkout with JavaScript SDK and a PHP backend to handle order capturing and database storage. 1. Prerequisites and API Setup While there are several methods
Payment Gateway Integration in PHP: Step-by-Step Guide - Razorpay