What are the recommended resources for understanding and implementing PayPal redirect functionality in PHP?

To implement PayPal redirect functionality in PHP, you can use PayPal's Instant Payment Notification (IPN) system. This system allows you to receive notifications about payment events and update your database accordingly. You can use PayPal IPN to redirect users to a specific page after a successful payment. 

<?php
// Set up PayPal IPN listener
require('paypal_ipn_listener.php');

// Check if payment is successful
if ($payment_status == 'Completed') {
    // Redirect user to a success page
    header('Location: success.php');
    exit;
} else {
    // Redirect user to a failure page
    header('Location: failure.php');
    exit;
}
?>

Keywords

PayPal redirect functionality PHP implementation resources

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