In what situations would it be more secure to handle PayPal integration server-side rather than client-side in PHP?

Handling PayPal integration server-side rather than client-side in PHP would be more secure in situations where sensitive information such as API credentials or transaction details need to be kept confidential. By processing the PayPal integration server-side, you can ensure that these details are not exposed to the client-side code, reducing the risk of them being intercepted or manipulated by malicious actors. 

// Server-side PayPal integration example
// This code should be placed on the server-side script that handles PayPal transactions

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

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

// Create a new payment object
$payment = new \PayPal\Api\Payment();
$payment->setIntent('sale');

// Set payment details
$transaction = new \PayPal\Api\Transaction();
$amount = new \PayPal\Api\Amount();
$amount->setTotal('10.00');
$amount->setCurrency('USD');
$transaction->setAmount($amount);
$payment->setTransactions([$transaction]);

// Execute payment
try {
    $payment->create($apiContext);
    echo 'Payment successful!';
} catch (\PayPal\Exception\PayPalConnectionException $e) {
    echo 'Payment failed: ' . $e->getData();
}

Keywords

PayPal integration server-side client-side security PHP

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