I don't know much about php but am trina work on this site, the problem with the code is that a user will be online but when ever he click on the link to the code or other links too it returns an error message that user is not logged in.

<?php
error_reporting(0) ;
require_once"./includes/functions/gzip.php" ;
include('start.php') ;
include("config.php" ) ;
include("./includes/".$ver."/banned" ) ;

$bots = file("bots/bots.dat" ) ;

$nocache = rand(10000, 99999) ;

list($msec, $sec) = explode(chr(32), microtime());
$headtime = $sec + $msec;

switch($ver)
{
case 'html':
$my_title = "Mysite tittle ";
if(!isset($_COOKIE['theme'])) $_COOKIE['theme'] = 1;
include_once "themes/".intval($_COOKIE['theme'])."/index.php";

//AUTH
$id = intval($_SESSION['id']) ;
$password = mysql_escape_string($_SESSION['password']) ;
$q = mysql_query("SELECT `id` FROM `chat_users` WHERE `id` = '".$id."' AND `password` = '".md5($password)."';" ) ;
if(mysql_num_rows($q) == 0)
{
echo "<small>Sorry you are not logged in!</small><br/>\n";
include_once "themes/".intval($_COOKIE['theme'])."/foot.php";
exit() ;
}
//END AUTH

//ONLINE
$online = time() + 60;
$update = mysql_query("UPDATE `chat_users` SET `time` = '".$online."', `place` = 0, `ip` = '".getenv('REMOTE_ADDR')."', `ua` = '".htmlspecialchars(getenv('HTTP_USER_AGENT'))."' WHERE `id` = '".$id."';" ) ;
//END ONLINE

echo "<form action=\"intim.php?ver=html&amp;nocache=$nocache&amp;".SID."\" method=\"post\">\n";
echo "Enter key*:<br/>\n";
echo "<input type=\"text\" name=\"key\" maxlength=\"10\" /><br/>\n";
echo "<input type=\"submit\" value=\"Enter\" /></form>\n";
echo "* key can only contain letters, and numbers. The length of the key should not be more than 10 characters.<br/>\n";
echo "<a href=\"menu.php?".SID."&amp;ver=html&amp;nocache=$nocache\">Portal</a><br/>\n";
list($msec, $sec) = explode(chr(32), microtime());
echo "<br/><span style=\"font-size: small\">[".round(($sec+$msec)-$headtime,5)."] sec</span><br/>\n";
echo "</body></html>";
break;
}
?>

What is the error message?

Your code is not commented and so I can't really comprehend much.

Try to make your programming at least a bit Object Oriented so that you can easily debug

Well, looking at your scrambled codes( no offence)..
Your using sessions, cookies and your error reporting is turned off
..
1. Check that the sessions are well connected with the users details from the database..
E.g $_Session['Id'] = $id (from database);

2. If your script is dependent on cookies, I.e if ur saving user information with cookies...
If the browser cookie is not turned on you might be having issues like that.

Also make sure the cookies aren't expiring early wich could be d one logging the user out.


3. Remove the code error_reporting(0)..for now till you are done debugging. because it will not show errors.

4. I can see a part of $online..which uses time... Make sure its not the timing that might be the cause.the " 60" there might be 60seconds or 1hr...

I hope it helps because I can't really understand d code.

Iam_Godzilla: Well, looking at your scrambled codes( no offence)..
Your using sessions, cookies and your error reporting is turned off
..
1. Check that the sessions are well connected with the users details from the database..
E.g $_Session['Id'] = $id (from database);

2. If your script is dependent on cookies, I.e if ur saving user information with cookies...
If the browser cookie is not turned on you might be having issues like that.

Also make sure the cookies aren't expiring early wich could be d one logging the user out.


3. Remove the code error_reporting(0)..for now till you are done debugging. because it will not show errors.

4. I can see a part of $online..which uses time... Make sure its not the timing that might be the cause.the " 60" there might be 60seconds or 1hr...

I hope it helps because I can't really understand d code.

Thanks any way, i gat more coding to do.

It looks like you just copied and pasted this code from somewhere...no offence please cos we all do it too
I don't see a session being started here add session_start() at the top of the code I.e <?php session_start(); your codes are here >

Please always comment on your codes..it helps a great deal

Remove mysql_real_escape_string from the password and put md5() instead, because you didn't hash the password from the begining but you are sending a sql query to the database to fetch a password that was hatched so it can never work like that.I.e md5($_POST["password"])) and not mysql_real_escape_string($_POST["password"])

Thank you