// hisoblash
$page_size = ob_get_length();
if(!isset($_SESSION['traf']))
$_SESSION['traf'] = 0;
$_SESSION['traf'] += $page_size;
$hisoblagichend = microtime(true);
$tezlik = $hisoblagichend - $hisoblagich;
 
echo '<div class="menu"><b>Sahifa hajmi:</b> <span class="time">'.round($page_size / 1024, 2).' kb.</span><br/>' .
'<b>Trafikingiz:</b> <span class="time">'.round($_SESSION['traf'] / 1024, 2).' kb.</span><br/>' .
'<b>Tezlik:</b> <span class="time">'.round($tezlik, 3).' sek.</span></div>';