Thinkphp --- 实现递归取出文件以及文件夹

<?php
namespace HomeController;
use ThinkController;
class RecursiveController extends Controller{
    
    /**
     * 构造函数
     */
    
    public function __construct()
    {
        //初始化操作
    
    }
    
    public function index()
    {
        $dirPath = "/var/www";
       //调用处理函数
        $this->loopFun( $dirPath );
    
    }
    
    private function loopFun( $dir )
    {
    //取出文件或者文件夹
        $list = scandir( $dir );
  
        foreach( $list as $file )
        {
            $location_dir = $dir . "/" . $file;
    
            echo $location_dir . "";
           //判断是否是文件夹 是就调用自身函数再去进行处理
            if( is_dir( $location_dir ) && "." != $file && ".." != $file )
            {
                $this->loopFun( $location_dir );
            }
    
        }
    }
    
}