yii2常用路径获取

public function actionGetUrlList()
{
    echo "当前域名地址：".Yii::$app->request->hostInfo."<br>";
    echo "当前目录物理路径：".Yii::$app->basePath."<br>";  
    echo "当前项目路径：".dirname(Yii::$app->BasePath)."<br>";
    echo "当前Url: ".Yii::$app->request->url."<br>";
    echo "当前Home Url: ".Yii::$app->homeUrl."<br>";
    echo "当前return Url: ".Yii::$app->user->returnUrl."<br>";
    echo "获取当前模块ID方法：".Yii::$app->controller->module->id."<br>";
    echo "获取当前控制器的ID方法：".Yii::$app->controller->id."<br>";
    echo "获取当前action的ID方法：".Yii::$app->controller->action->id."<br>";
    echo "ip地址： ".Yii::$app->request->userIP."<br>";
    echo "上一个绝对Url":".Yii::$app->request->referrer."<br/>";
    echo "返回绝对路径:".Yii::$app->urlManager->createAbsoluteUrl('a/b')."<br/>"
    echo "是否启用路由美化".Yii::$app->urlManager->enablePrettyUrl."<br/>";
}