set('email', 'example@example.com'); $registry->set('phone', '1234567890'); // Clear existing registry values $registry->flush(); // Set new registry values $registry->set('name', 'John Doe'); $registry->set('age', 25); // Get registry value echo $registry->get('name'); ?>In this example, we create a new Registry object and set initial values for email and phone. Then we call the flush method to clear the registry values before setting new values for name and age. Finally, we get the value of the name key using the get method and display it. Package library: There are many PHP packages and libraries that provide registry functionality, including Symfony, Laravel, and Zend Framework.