Salve,

ho uno script che segna quante persone sono on line su un sito in un preciso momento

questo è il sorgente:

1. parte: inserimento dell' utente

[CODE]<?php

include("dbinfo.php");

global $HTTP_SERVER_VARS;


define("SESSION_LENGTH", 20);

$userIP = $HTTP_SERVER_VARS["REMOTE_ADDR"];

$sConn = @mysql_connect($dbServer, $dbUser, $dbPass)
or die("Couldnt connect to database");

$dbConn = @mysql_select_db($dbName, $sConn)
or die("Couldnt select database $dbName");

$timeMax = time() - (60 * SESSION_LENGTH);
$result = mysql_query("select count(*) from usersOnline where unix_timestamp(dateAdded) >= '$timeMax' and userIP = '$userIP'");

$recordExists = mysql_result($result, 0, 0) > 0 ? true : false;

if(!$recordExists)
{

@mysql_query("insert into usersOnline(userIP) values('$userIP')");
}

?>

<?php
define("SESSION_LENGTH", 20);

$sConn = @mysql_connect($dbServer, $dbUser, $dbPass)
or die("Couldnt connect to database");

$dbConn = @mysql_select_db($dbName, $sConn)
or die("Couldnt select database $dbName");

$timeMax = time() - (60 * SESSION_LENGTH);

$result = mysql_query("select count(*) from usersOnline where unix_timestamp(dateAdded) >= '$timeMax' and userIP = '$userIP'");

$recordExists = mysql_result($result, 0, 0) > 0 ? true : false;

if(!$recordExists)
{

@mysql_query("insert into usersOnline(userIP) values('$userIP')");
}

?>