[KaL]

<?php
$dbhost=""; //Host/IP from the MySQL Database
$dbname=""; //Name of Database (in many times it is 'Emu_DB')
$dbuser="root"; //Username to the MySQL Database
$dbpass=""; //Passwort to the MySQL Database

$sql=mysql_connect($dbhost,$dbuser,$dbpass) or die ("can't connect to database.");
mysql_select_db($dbname) or die ("Database dont exists");

$sql=mysql_query("SELECT * FROM characters WHERE online='1'");
$c=mysql_num_rows($sql);

echo $c;
?>