<?
$onl_us = mysql_result(mysql_query(\"SELECT COUNT(*) FROM `user` WHERE `date_last` > \".(time()-3600).\"\"

, 0);
$onl_gus = mysql_result(mysql_query(\"SELECT COUNT(*) FROM `guests` WHERE `date_last` > \".(time()-3600).\"\"

, 0);
$onl_all = $onl_us + $onl_gus;
echo \'Онлайн: \'.$onl_all.\' | \'.$onl_us.\' юзера и \'.$onl_gus.\' гостя\';
?>