What potential issues can arise when integrating PayPal scripts into a website, especially in live mode?

One potential issue that can arise when integrating PayPal scripts into a website, especially in live mode, is encountering errors with payment processing or transaction failures. To solve this, it is important to thoroughly test the integration in a sandbox environment before going live, ensure that all necessary variables are correctly set up, and handle any potential errors gracefully to provide a good user experience. 

// Example code to handle errors in PayPal payment processing
try {
    // PayPal payment processing code here
} catch (Exception $e) {
    // Log the error
    error_log('PayPal Error: ' . $e->getMessage());
    // Display a friendly error message to the user
    echo 'An error occurred during payment processing. Please try again later.';
}

Keywords

PayPal integration website live mode PHP scripts error handling

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