define('ROOT_PATH', $_SERVER['DOCUMENT_ROOT'] . '/myapp');
require_once '/path/to/PHPMailer/src/PHPMailer.php';In this example, the `PHPMailer.php` file is located within the `src` directory of the `PHPMailer` package. By using a static path to reference this file, developers can ensure that it is always loaded correctly regardless of where the application is running or what other dependencies it may have. Overall, static paths are an important component of PHP development, allowing for easy referencing of resources and ensuring consistency across different environments and deployments.