文件夹大小与PHP？

在查找父文件夹的大小时，我遇到了一个问题：

这是我的示例代码：

function foldersize($dir){
 $count_size = 0;
 $count = 0;
 $dir_array = scandir($dir);
 foreach($dir_array as $key=>$filename){
  if($filename!=".." && $filename!="."){
   if(is_dir($dir."/".$filename)){
    $new_foldersize = foldersize($dir."/".$filename);
    $count_size = $count_size + $new_foldersize[0];
    $count = $count + $new_foldersize[1];
   }else if(is_file($dir."/".$filename)){
    $count_size = $count_size + filesize($dir."/".$filename);
    $count++;
   }
  }

 }

 return $count_size;
}

function foldersize($dir){
     $count_size = 0;
     $count = 0;
     $dir_array = scandir($dir);
     foreach($dir_array as $key=>$filename){
      if($filename!=".." && $filename!="."){
       if(is_dir($dir."/".$filename)){
        $new_foldersize = foldersize($dir."/".$filename);
        $count_size = $count_size + $new_foldersize;
       }else if(is_file($dir."/".$filename)){
        $count_size = $count_size + filesize($dir."/".$filename);
        $count++;
       }
      }

     }

     return $count_size;
    }

示例

如果我有如下结构的文件夹：

 mm[30MB]->rr[40MB]->ee[300MB]->ss[309MB]

如果我使用上述代码查找

mm

文件夹的大小，则显示的大小为

0

---

有人提出一些想法吗答案是：

function foldersize($dir){
 $count_size = 0;
 $count = 0;
 $dir_array = scandir($dir);
 foreach($dir_array as $key=>$filename){
  if($filename!=".." && $filename!="."){
   if(is_dir($dir."/".$filename)){
    $new_foldersize = foldersize($dir."/".$filename);
    $count_size = $count_size + $new_foldersize[0];
    $count = $count + $new_foldersize[1];
   }else if(is_file($dir."/".$filename)){
    $count_size = $count_size + filesize($dir."/".$filename);
    $count++;
   }
  }

 }

 return $count_size;
}

function foldersize($dir){
     $count_size = 0;
     $count = 0;
     $dir_array = scandir($dir);
     foreach($dir_array as $key=>$filename){
      if($filename!=".." && $filename!="."){
       if(is_dir($dir."/".$filename)){
        $new_foldersize = foldersize($dir."/".$filename);
        $count_size = $count_size + $new_foldersize;
       }else if(is_file($dir."/".$filename)){
        $count_size = $count_size + filesize($dir."/".$filename);
        $count++;
       }
      }

     }

     return $count_size;
    }