How can the PHP script be optimized to handle error handling and improve overall code quality?

To optimize error handling and improve overall code quality in a PHP script, you can use try-catch blocks to catch and handle exceptions, use meaningful error messages, and implement proper logging mechanisms to track errors.

try {
    // Your existing PHP code that may throw exceptions
} catch (Exception $e) {
    // Handle the exception, log the error, and provide a meaningful message to the user
    error_log('An error occurred: ' . $e->getMessage());
    echo 'An error occurred. Please try again later.';
}