<?
$count = mysql_fetch_assoc(query("SELECT * FROM (
SELECT COUNT( * ) AS guest_posts FROM `guest`) AS q1, (
SELECT COUNT( * ) AS guest_posts_new FROM `guest` WHERE `time` > '".(time()-60*60*24)."') AS q2
"));
$c_g = $count['guest_posts_new'];
if ($c_g==0)$c_g=NULL;
else
$c_g='/+'.$c_g;
echo $count['guest_posts'] . $c_g;