CSiteCheckerTest::Unformat

function Unformat($str)
{
	$str = strtolower($str);
	$res = intval($str);
	$suffix = substr($str, -1);
	if($suffix == "k")
		$res *= 1024;
	elseif($suffix == "m")
		$res *= 1048576;
	elseif($suffix == "g")
		$res *= 1048576*1024;
	elseif($suffix == "b")
		$res = self::Unformat(self::substr($str,0,-1));
	return $res;
}