yii2 找到根目录的绝对路径

1. 创建 components 在 common 文件加下

2. 创建  Request.php

   namespace common\components;
   
   
   class Request extends \yii\web\Request {
       public $web;
       public $adminUrl;
   
       public function getBaseUrl(){
           return str_replace($this->web, "", parent::getBaseUrl()) . $this->adminUrl;
       }
   
       public function getActualBaseUrl(){
           return str_replace($this->web, "", parent::getBaseUrl());
       }
   
       public function resolvePathInfo(){
           if($this->getUrl() === $this->adminUrl){
               return "";
           }else{
               return parent::resolvePathInfo();
           }
       }
   }
   

3. Yii::$app->request->getActualBaseUrl()