src/Wechat.php
public function isAuthorized()
    {
        $hasSession = Yii::$app->session->has($this->sessionParam);
        $sessionVal = Yii::$app->session->get($this->sessionParam);
        return ($hasSession && !empty($sessionVal));
    }
public function isAuthorized()
    {
        $hasSession = Yii::$app->session->has($this->sessionParam);
        $sessionVal = Yii::$app->session->get($this->sessionParam);
        return ($hasSession && !empty($sessionVal));
    }
check if current user authorized
@return bool