微信公眾號修改基本配置發生token驗證失敗

public function actionIndex(){
        $nonce = Yii::$app->request->get('nonce');
        $token = 'adshare';
        $timestamp = Yii::$app->request->get('timestamp');
        $echostr = Yii::$app->request->get('echostr');
        $signature = Yii::$app->request->get('signature');
        $array = array();
        $array = array($nonce,$timestamp,$token);
        sort($array);
        $str = sha1(implode($array));

        /*if($str == $signature){
            echo $echostr;
        }*/
        if($str == $signature && $echostr){
            return $echostr;
        }else{
            self::actionMessage();
        }
    }

 

 

注意方法中被注釋的代碼，不管是初次還是再次修改，都需要把$echostr返回給微信，才能正確驗證，否則會一直提示token的問題！