// кол-во акков
<?php
mysql_select_db("account");
$account = "SELECT * from account";
$accountquery = mysql_query($account);
$accall = mysql_num_rows($accountquery);
echo "
Всего аккаунтов: $accall
";
?>

<?php
// человек онлайн
mysql_select_db("player");  
$ex = mysql_query("SELECT COUNT(*) as count FROM player WHERE DATE_SUB(NOW(), INTERVAL 5 MINUTE) < last_play;");
$player_online = mysql_fetch_object($ex)->count;
echo "
Персонажи онлайн: $player_online
";
?>