TwitterOAuth::getXAuthToken PHP Method

    function getXAuthToken($username, $password)
    {
        $parameters = array();
        $parameters['x_auth_username'] = $username;
        $parameters['x_auth_password'] = $password;
        $parameters['x_auth_mode'] = 'client_auth';
        $request = $this->oAuthRequest($this->accessTokenURL(), 'POST', $parameters);
        $token = OAuthUtil::parse_parameters($request);
        $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
        return $token;
    }