error v phpbb

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Insicer mi napise:

phpBB : Critical Error

Error updating sessions table

DEBUG MODE

SQL Error : 1064 You have an error in your SQL syntax. Check the manual that
corresponds to your MySQL server version for the right syntax to use near
'WHERE session_id = '5048cd384a636a91040fca4f3c637997'' at line

UPDATE phpbbsessions SET session_time = 1068844493, session_page = WHERE
session_id = '5048cd384a636a91040fca4f3c637997'

Line : 267
File : /home/glftpd/site/incoming/zalcy/new/forum/includes/sessions.php


PLEASE HELP

upam, da je nisem prevec dal:



// Checks for a given user session, tidies session table and updates user
// sessions at each page refresh
//
function session_pagestart($user_ip, $thispage_id)
{
global $db, $lang, $board_config;
global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID;

$cookiename = $board_config['cookie_name'];
$cookiepath = $board_config['cookie_path'];
$cookiedomain = $board_config['cookie_domain'];
$cookiesecure = $board_config['cookie_secure'];

$current_time = time();
unset($userdata);

if ( isset($HTTP_COOKIE_VARS[$cookiename . '_sid']) || isset($HTTP_COOKIE_VARS[$cookiename . '_data']) )
{
$sessiondata = isset( $HTTP_COOKIE_VARS[$cookiename . '_data'] ) ? unserialize(stripslashes($HTTP_COOKIE_VARS[$cookiename . '_data'])) : array();
$session_id = isset( $HTTP_COOKIE_VARS[$cookiename . '_sid'] ) ? $HTTP_COOKIE_VARS[$cookiename . '_sid'] : '';
$sessionmethod = SESSION_METHOD_COOKIE;
}
else
{
$sessiondata = array();
$session_id = ( isset($HTTP_GET_VARS['sid']) ) ? $HTTP_GET_VARS['sid'] : '';
$sessionmethod = SESSION_METHOD_GET;
}

//
// Does a session exist?
//
if ( !empty($session_id) )
{
//
// session_id exists so go ahead and attempt to grab all
// data in preparation
//
$sql = "SELECT u.*, s.*
FROM " . SESSIONS_TABLE . " s, " . USERS_TABLE . " u
WHERE s.session_id = '$session_id'
AND u.user_id = s.session_user_id";
if ( !($result = $db->sql_query($sql)) )
{
message_die(CRITICAL_ERROR, 'Error doing DB query userdata row fetch', '', __LINE__, __FILE__, $sql);
}

$userdata = $db->sql_fetchrow($result);

//
// Did the session exist in the DB?
//
if ( isset($userdata['user_id']) )
{
//
// Do not check IP assuming equivalence, if IPv4 we'll check only first 24
// bits ... I've been told (by vHiker) this should alleviate problems with
// load balanced et al proxies while retaining some reliance on IP security.
//
$ip_check_s = substr($userdata['session_ip'], 0, 6);
$ip_check_u = substr($user_ip, 0, 6);

if ($ip_check_s == $ip_check_u)
{
$SID = ($sessionmethod == SESSION_METHOD_GET || defined('IN_ADMIN')) ? 'sid=' . $session_id : '';

//
// Only update session DB a minute or so after last update
//
if ( $current_time - $userdata['session_time'] > 60 )
{
$sql = "UPDATE " . SESSIONS_TABLE . "
SET session_time = $current_time, session_page = $thispage_id
WHERE session_id = '" . $userdata['session_id'] . "'";
if ( !$db->sql_query($sql) )
{
message_die(CRITICAL_ERROR, 'Error updating sessions table', '', __LINE__, __FILE__, $sql);
}

if ( $userdata['user_id'] != ANONYMOUS )
{
$sql = "UPDATE " . USERS_TABLE . "
SET user_session_time = $current_time, user_session_page = $thispage_id
WHERE user_id = " . $userdata['user_id'];
if ( !$db->sql_query($sql) )
{
message_die(CRITICAL_ERROR, 'Error updating sessions table', '', __LINE__, __FILE__, $sql);
}
}

//
// Delete expired sessions