计算指定文件夹的信息(文件夹数,文件数,文件夹大小)

计算文件夹的大小，包括子文件夹，格式化输出文件夹大小、文件数、子文件夹数信息。

<?
 //代码也可以用于统计目录数
 //格式化输出目录大小 单位：Bytes，KB，MB，GB
 
 function getDirectorySize($path)
 {
  $totalsize = 0;
  $totalcount = 0;
  $dircount = 0;
  if ($handle = opendir ($path))
  {
    while (false !== ($file = readdir($handle)))
    {
      $nextpath = $path . &#39;/&#39; . $file;
      if ($file != &#39;.&#39; && $file != &#39;..&#39; && !is_link ($nextpath))
      {
        if (is_dir ($nextpath))
        {
          $dircount++;
          $result = getDirectorySize($nextpath);
          $totalsize += $result[&#39;size&#39;];
          $totalcount += $result[&#39;count&#39;];
          $dircount += $result[&#39;dircount&#39;];
        }
        elseif (is_file ($nextpath))
        {
          $totalsize += filesize ($nextpath);
          $totalcount++;
        }
      }
    }
  }
  closedir ($handle);
  $total[&#39;size&#39;] = $totalsize;
  $total[&#39;count&#39;] = $totalcount;
  $total[&#39;dircount&#39;] = $dircount;
  return $total;
 }
 
 function sizeFormat($size)
 {
    $sizeStr=&#39;&#39;;
    if($size<1024)
    {
        return $size." bytes";
    }
    else if($size<(1024*1024))
    {
        $size=round($size/1024,1);
        return $size." KB";
    }
    else if($size<(1024*1024*1024))
    {
        $size=round($size/(1024*1024),1);
        return $size." MB";
    }
    else
    {
        $size=round($size/(1024*1024*1024),1);
        return $size." GB";
    }
 
 }
 
$path="/home/www/htdocs";
$ar=getDirectorySize($path);
 
echo "<h4>路径 : $path</h4>";
echo "目录大小 : ".sizeFormat($ar[&#39;size&#39;])."<br>";
echo "文件数 : ".$ar[&#39;count&#39;]."<br>";
echo "目录术 : ".$ar[&#39;dircount&#39;]."<br>";
 
 //print_r($ar);
 ?>