checking file sizes... help!

[darknuke]

i need php code that can detect the size of a folder and its subfolders in either bytes, kilobytes, or megabytes and can display it to the user!

[hand]

http://www.php.net/manual/en/function.filesize.php

<?
$whichDir = ".";

function explore($adr,&$total,&$dir,&$size){ 
	$dp=OpenDir($adr);

do {
	$itm=ReadDir($dp);
	if (Is_Dir("$adr/$itm")&&($itm!=".")&&($itm!="..")&&($itm!="")){
		explore("$adr/$itm",$total,$dir,$size);
		$dir++;
	} elseif (($itm!=".")&&($itm!="..")&&($itm!="")){
		$size=$size+FileSize("$adr/$itm");
		$total++;
	}
}
while ($itm!=false);
CloseDir($dp);
}

explore($whichDir,$total,$dir,$size);
$free=BcDIV($size,1024*1024,2);

echo "
Engaged place: <B>$free</B> MB (i.e. <B>$total</B>
files in <B>$dir</B> dirs)
";
?>