PHP calculates the specified folder information (number of folders, number of files, folder size)

//Format output directory size unit: Bytes, KB, MB, GB
//Can also be used to count the number of directories
//site bbs.it-home.org
function getDirectorySize( $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++;
 $result = getDirectorySize($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;
}

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";
 }
 else
 {
 $size=round($size/(1024*1024*1024),1);
 return $size." GB";
 }

}

$path="/home/www/htdocs";
$ar=getDirectorySize($path);

echo "Path: $path";
echo "Directory size: ".sizeFormat($ar['size'])."";
echo "Number of files: ".$ar['count']."
echo "Directory technique: ".$ar['dircount']."";

//print_r($ar);
?>