public static function processRedirect() { $redirects = CacheHelper::get('redirects'); if (empty($redirects)) { $redirects = (new Query())->select(['old_url', 'new_url'])->from(Redirect::tableName())->all(); $redirects = ArrayHelper::map($redirects, 'old_url', 'new_url'); CacheHelper::set('redirects', $redirects, CacheHelper::getTag(self::className())); } $url = $_SERVER['REQUEST_URI']; if (isset($redirects[$url])) { Yii::$app->response->redirect($redirects[$url], 301); } }