php获取文件夹信息的统计函数

<?
//统计文件夹的相关信息
//统计目录数
//格式化输出目录大小 单位：Bytes，KB，MB，GB
 
function getFolderSize($path)
{
  $totalsize = 0;
  $totalcount = 0;
  $dircount = 0;
  if ($handle = opendir ($path))
  {
    while (false !== ($file = readdir($handle)))
    {
      $nextpath = $path . '/' . $file;
      if ($file != '.' && $file != '..' && !is_link ($nextpath))
      {
        if (is_dir ($nextpath))
        {
          $dircount++;
          $result = getFolderSize($nextpath);
          $totalsize += $result['size'];
          $totalcount += $result['count'];
          $dircount += $result['dircount'];
        }
        elseif (is_file ($nextpath))
        {
          $totalsize += filesize ($nextpath);
          $totalcount++;
        }
      }
    }
  }
  closedir ($handle);
  $total['size'] = $totalsize;
  $total['count'] = $totalcount;
  $total['dircount'] = $dircount;
  return $total;
}

//格式化输出信息
function sizeFormat($size)
{
    $sizeStr='';
    if($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";
    } www.jb200.com
    else
    {
        $size=round($size/(1024*1024*1024),1);
        return $size." GB";
    }
 
}
 
$path="/var/www";
$ar=getFolderSize($path);
 
echo "<h4>您查看的路径 : $path</h4>";
echo "目录大小 : ".sizeFormat($ar['size'])."<br>";
echo "文件数 : ".$ar['count']."<br>";
echo "目录数 : ".$ar['dircount']."<br>";

//输出
//print_r($ar);
?>

<?php 
    // 获取文件夹大小 
    function getDirSize($dir) 
    {  
        $handle = opendir($dir); 
        while (false!==($FolderOrFile = readdir($handle))) 
        {  
            if($FolderOrFile != "." && $FolderOrFile != "..")  
            {  
                if(is_dir("$dir/$FolderOrFile")) 
                {  
                    $sizeResult += getDirSize("$dir/$FolderOrFile");  
                } 
                else 
                {  
                    $sizeResult += filesize("$dir/$FolderOrFile");  
                } 
            }     
        } 
        closedir($handle); 
        return $sizeResult; 
    } 
    // 单位自动转换函数 
    function getRealSize($size) 
    {  
        $kb = 1024;         // Kilobyte 
        $mb = 1024 * $kb;   // Megabyte 
        $gb = 1024 * $mb;   // Gigabyte 
        $tb = 1024 * $gb;   // Terabyte 
         
        if($size < $kb) 
        {  
            return $size." B"; 
        } 
        else if($size < $mb) 
        {  
            return round($size/$kb,2)." KB"; 
        } 
        else if($size < $gb) 
        {  
            return round($size/$mb,2)." MB"; 
        } 
        else if($size < $tb) 
        {  
            return round($size/$gb,2)." GB"; 
        } 
        else 
        {  
            return round($size/$tb,2)." TB"; 
        } 
    } 
    echo  getRealSize(getDirSize('目录路径')); 
?>