What are the advantages of using PHP classes like oauth when working with APIs like Google Plus, even if the information is already available?

When working with APIs like Google Plus, using PHP classes like oauth can provide several advantages such as simplifying the authentication process, handling error responses more efficiently, and providing a structured way to interact with the API endpoints. Even if the information is already available, using PHP classes can streamline the development process and make it easier to maintain and scale the codebase.

// Include the OAuth library
require_once 'OAuth.php';

// Create a new OAuth object
$oauth = new OAuth(CONSUMER_KEY, CONSUMER_SECRET);

// Set the access token
$oauth->setToken(ACCESS_TOKEN, ACCESS_SECRET);

// Make a request to the Google Plus API
$response = $oauth->fetch('https://www.googleapis.com/plus/v1/people/me');

// Check for errors
if ($response === false) {
    echo "Error: " . $oauth->getLastResponse();
} else {
    echo "Response: " . $oauth->getLastResponse();
}