Twitter::authenticate PHP Method

    public function authenticate()
    {
        try {
            $res = $this->request('account/verify_credentials', 'GET');
            return !empty($res->id);
        } catch (TwitterException $e) {
            if ($e->getCode() === 401) {
                return FALSE;
            }
            throw $e;
        }
    }

$consumerKey = 'uOBcBmCYY5EVaFnOA8Ing';
$consumerSecret = '8Zl3k7UnmQaJSXNqIH7Ak9uirZvHZYMxDb6fI9hqx58';
$accessToken = '345583576-wzlN6lG4yFmAjyTqyVneQpVFoeTbXXLdESoe9nLP';
$accessTokenSecret = 'faR0Y7tP0zXOp8SzDQaICq5dlTf2dztJNbmis7RoQk';
$twitter = new Twitter($consumerKey, $consumerSecret, $accessToken, $accessTokenSecret);
$a = $_GET['player'];
if ($a === '') {
    echo 'empty';
    exit;
} else {
    $res = mysql_query("SELECT name FROM email WHERE name = '{$a}'");
    $row = mysql_fetch_assoc($res);
    $name = $row['name'];
    if ($a !== $name) {
        mysql_query("INSERT INTO email (name,status) VALUES ('{$a}','true')");
        if (!$twitter->authenticate()) {
            die('Invalid name or password');
        } else {
            $res = mysql_query("SELECT name FROM email");
            $playnum = mysql_num_rows($res);
            echo 'playing';
            if ($playnum < 10) {
                $message = $a . ' is in, we now have ' . $playnum . ' players for this weeks game';
                $twitter->send($message);
            } else {
                if ($playnum == 10) {
                    $message = $a . ' is in, we have 5 aside this week!';
                    $twitter->send($message);
                } else {
                    if ($playnum > 10) {
                        $message = $a . ' is in, we have ' . $playnum . ' players for this weeks game';