PHP statistical function to obtain folder information

//Statistical folder-related information
//Number of statistical directories
//Format output directory size unit: 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 $total;
}
//Format output information
function sizeFormat($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";
 } bbs.it-home.org
 else
 {
 $size=round($size/(1024*1024*1024),1);
 return $size." GB";
 }

}

$path="/var/www";
$ar= getFolderSize($path);

echo "The path you are viewing: $path";
echo "Directory size: ".sizeFormat($ar['size'])."echo "Number of files: ".$ar['count']."";
echo "Number of directories: ".$ar['dircount']."";< ;/p>
//Output
//print_r($ar);
?>

Example 2, PHP function to get the folder size

 // Get the folder size
 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 $sizeResult;
 }
 // Automatic unit conversion function
 function getRealSize($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('directory path'));
?>