if (Twitter::logged_in())
{
	echo 'You are logged in!';
}

if ( ! Twitter::logged_in())
{
	Twitter::login();
}

Twitter::set_callback(Uri::create('twitter/callback'));

Twitter::get_tokens();

/*
Returns an array in the following format:
array(
	'consumer_key'    => '',
	'consumer_secret' => '',
	'access_key'      => '',
	'access_secret'   => '',
)
*/

// Verifies the user and returns all of the user's information
$twitter_user = Twitter::get('account/verify_credentials');

// Updates the current user's status (it Tweets)
$result = Twitter::post('statuses/update', array('status' => 'Using this new awesome cool Twitter package for Fuel!'));

// Gets all the tweets with the hashtag of #fuelphp
Twitter::search(array('q' => urlencode('#fuelphp')));

<?php

class Controller_Twitter extends Controller {

	public function action_login()
	{
		if ( ! Twitter::logged_in() )
		{
			Twitter::set_callback(Uri::create('twitter/callback'));
			Twitter::login();
		}
		else
		{
			Response::redirect(Uri::create('/'));
		}
	}

	public function action_logout()
	{
		Session::destroy();
		Response::redirect(Uri::create('/'));
	}

	public function action_callback()
	{
		$tokens = Twitter::get_tokens();
		$twitter_user = Twitter::get('account/verify_credentials');

		// Update or create the user.  We update every time a user logs in
		// so that if they update their profile, we get that update.
		$user = Model_User::find_by_screen_name($twitter_user->screen_name);
		if ( ! $user)
		{
			$user = new Model_User();
		}
		$user->screen_name = $twitter_user->screen_name;
		$user->name = $twitter_user->name;
		$user->description = $twitter_user->description;
		$user->avatar = $twitter_user->profile_image_url;
		$user->oauth_token = $tokens['oauth_token'];
		$user->oauth_token_secret = $tokens['oauth_token_secret'];
		$user->save();
		
		Session::set('user_id', $user->id);
		
		Response::redirect(Uri::create('/'));
	}
	
}