gistfile1.php

    <?php
    $code = \Input::get('go');
    $twitterService = OAuth::consumer('twitter');

    if (\Input::get('oauth_token')) {
        $token = $twitterService->getStorage()->retrieveAccessToken('twitter');
        $twitterService->requestAccessToken(
            \Input::get('oauth_token'),
            \Input::get('oauth_verifier'),
            $token->getRequestTokenSecret()
        );

        $result = json_decode($twitterService->request('account/verify_credentials.json'));
        dd($result);
    } elseif (!empty($code) && $code === 'go') {
        $token = $twitterService->requestRequestToken();
        $url = $twitterService->getAuthorizationUri(array('oauth_token' => $token->getRequestToken()));
        header('Location: ' . $url);
        exit;
    } else {
        $url = URL::current() . '?go=go';
        echo "<a href=\"$url\">Login with Twitter!</a>";
        exit;
    }