Error codes with 1.7.7 implication, plus some questions...

[Anarchology]

Hey guys!

I have backed up, and modified the needed files from the 1.7.7 upgrade, but throwing some errors. First, I used the tutorial below to modify the files listed, and then also just uploaded the new "template/default" folder (since nothing in that original folder had been modified by mods. I used the topic below...
http://www.4homepages.de/forum/index.php?topic=24794.0

When viewing the home page, I get just this...

Code: [Select]

Warning: Invalid argument supplied for foreach() in /home/xxxxx/public_html/savegasforums/000TPX/includes/sessions.php on line 349
But when I tried to login under any name, I got this cover the full page...

Code: [Select]

Warning: Invalid argument supplied for foreach() in /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php on line 349

Warning: Cannot modify header information - headers already sent by (output started at /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php:349) in /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php on line 101

Warning: Invalid argument supplied for foreach() in /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php on line 349

Warning: Cannot modify header information - headers already sent by (output started at /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php:349) in /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php on line 101

Warning: Cannot modify header information - headers already sent by (output started at /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php:349) in /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php on line 101

Warning: Cannot modify header information - headers already sent by (output started at /home/sayyo1/public_html/savegasforums/000TPX/includes/sessions.php:349) in /home/sayyo1/public_html/savegasforums/000TPX/includes/functions.php on line 114(Those above are from my test site, and not the one in my sig. The test site is www.savegasforums.com/000TPX/ . I may be changing it up within the next couple days, or restoring it back to its original state, so don't go by how it looks at the present time as changes may be reversed.)

The questions...

1.) I am upgrading from a heavily modified 1.7.6 version of the software, but ran into no problems when adding the changes within that 1.7.7 topic. However, I came to a stop at the "install.php" file. After I installed my version, I deleted the file. I didn't know if the changes to the new 1.7.7 version are dependent or not on that "install.php" file. Do I need it, or need to implicate it?

2.) With the newly created version of 1.7.7, are there any additions or changes to the database? Do I need to add or modify the DB tables?

3.) Has anyone yet found conflicting MOD's with the 1.7.7 version? The following MODs I have added to my site are below...

- Google Friendly Links
- Remove Right Click
- ReCaptcha Art
- Report a Picture
- Contact Form
- Avatars
- Added Google Adsense ads (didn't use any mod, just added them)

Thanks in advance!

[V@no]

10 lines above and below line 349 in includes/sessions.php please.

[NicholasP]

I also plan on upgrading from 1.7.4

Do I need to do any updates that are between 1.7.4 and 1.7.7 or can I upgrade directly from .4 to .7?

[Anarchology]

10 lines above and below line 349 in includes/sessions.php please.

Apologies... here is the whole sessions.php file I have modified:

Code: [Select]

<?php
/**************************************************************************
 *                                                                        *
 *    4images - A Web Based Image Gallery Management System               *
 *    ----------------------------------------------------------------    *
 *                                                                        *
 *             File: sessions.php                                         *
 *        Copyright: (C) 2002 Jan Sorgalla                                *
 *            Email: jan@4homepages.de                                    * 
 *              Web: http://www.4homepages.de                             * 
 *    Scriptversion: 1.7.6                                                *
 *                                                                        *
 *    Never released without support from: Nicky (http://www.nicky.net)   *
 *                                                                        *
 **************************************************************************
 *                                                                        *
 *    Dieses Script ist KEINE Freeware. Bitte lesen Sie die Lizenz-       *
 *    bedingungen (Lizenz.txt) für weitere Informationen.                 *
 *    ---------------------------------------------------------------     *
 *    This script is NOT freeware! Please read the Copyright Notice       *
 *    (Licence.txt) for further information.                              *
 *                                                                        *
 *************************************************************************/
if (!defined('ROOT_PATH')) {
  die("Security violation");
}

//-----------------------------------------------------
//--- Start Configuration -----------------------------
//-----------------------------------------------------

define('SESSION_NAME', 'sessionid');

$user_table_fields = array(
  "user_id" => "user_id",
  "user_level" => "user_level",
  "user_name" => "user_name",
  "user_password" => "user_password",
  "user_email" => "user_email",
  "user_showemail" => "user_showemail",
  "user_allowemails" => "user_allowemails",
  "user_invisible" => "user_invisible",
  "user_joindate" => "user_joindate",
  "user_activationkey" => "user_activationkey",
  "user_lastaction" => "user_lastaction",
  "user_location" => "user_location",
  "user_lastvisit" => "user_lastvisit",
  "user_comments" => "user_comments",
  "user_homepage" => "user_homepage",
  "user_icq" => "user_icq"
);

//-----------------------------------------------------
//--- End Configuration -------------------------------
//-----------------------------------------------------

function get_user_table_field($add, $user_field) {
  global $user_table_fields;
  return (!empty($user_table_fields[$user_field])) ? $add.$user_table_fields[$user_field] : "";
}

class Session {

  var $session_id;
  var $session_key;
  var $user_ip;
  var $user_location;
  var $current_time;
  var $session_timeout;
  var $mode = "get";
  var $session_info = array();
  var $user_info = array();

  function Session() {
    global $config;
    $this->session_timeout = $config['session_timeout'] * 60;
    $this->user_ip = $this->get_user_ip();
    $this->user_location = $this->get_user_location();
    $this->current_time = time();

    if (defined('SESSION_KEY') && SESSION_KEY != '') {
        $this->session_key = SESSION_KEY;
    } else {
        $this->session_key = md5('4images' . realpath(ROOT_PATH));
    }

    // Stop adding SID to URLs
    @ini_set('session.use_trans_sid', 0);

    //@ini_set('session.cookie_lifetime', $this->session_timeout);

    session_name(urlencode(SESSION_NAME));
    @session_start();

    $this->demand_session();
  }

  function set_cookie_data($name, $value, $permanent = 1) {
    $cookie_expire = ($permanent) ? $this->current_time + 60 * 60 * 24 * 365 : 0;
    $cookie_name = COOKIE_NAME.$name;
    setcookie($cookie_name, $value, $cookie_expire, COOKIE_PATH, COOKIE_DOMAIN, COOKIE_SECURE);
    $HTTP_COOKIE_VARS[$cookie_name] = $value;
  }

  function read_cookie_data($name) {
    global $HTTP_COOKIE_VARS;
    $cookie_name = COOKIE_NAME.$name;
    return (isset($HTTP_COOKIE_VARS[$cookie_name])) ? $HTTP_COOKIE_VARS[$cookie_name] : false;
  }

  function get_session_id() {
    if (SID == '') {
      $this->mode = "cookie";
    }

    if (preg_match('/[^a-z0-9]+/i', session_id())) {
      @session_regenerate_id();
    }

    $this->session_id = session_id();
  }

  function demand_session() {
    $this->get_session_id();
    if (!$this->load_session_info()) {
      $this->delete_old_sessions();
      $user_id = ($this->read_cookie_data("userid")) ? intval($this->read_cookie_data("userid")) : GUEST;
      $this->start_session($user_id);
    }
    else {
      $this->user_info = $this->load_user_info($this->session_info['session_user_id']);
      $update_cutoff = ($this->user_info['user_id'] != GUEST) ? $this->current_time - $this->user_info['user_lastaction'] : $this->current_time - $this->session_info['session_lastaction'];
      if ($update_cutoff > 60) {
        $this->update_session();
        $this->delete_old_sessions();
      }
    }
  }

  function start_session($user_id = GUEST, $login_process = 0) {
    global $site_db;

    $this->user_info = $this->load_user_info($user_id);
    if ($this->user_info['user_id'] != GUEST && !$login_process) {
      if ($this->read_cookie_data("userpass") == $this->user_info['user_password'] && $this->user_info['user_level'] > USER_AWAITING) {
        $this->set_cookie_data("userpass", $this->user_info['user_password']);
      }
      else {
        $this->set_cookie_data("userpass", "", 0);
        $this->user_info = $this->load_user_info(GUEST);
      }
    }

    //if (!$login_process) {
      $sql = "REPLACE INTO ".SESSIONS_TABLE."
              (session_id, session_user_id, session_lastaction, session_location, session_ip)
              VALUES
              ('".addslashes($this->session_id)."', ".$this->user_info['user_id'].", $this->current_time, '$this->user_location', '$this->user_ip')";
      $site_db->query($sql);
    //}

    $this->session_info['session_user_id'] = $this->user_info['user_id'];
    $this->session_info['session_lastaction'] = $this->current_time;
    $this->session_info['session_location'] = $this->user_location;
    $this->session_info['session_ip'] = $this->user_ip;

    if ($this->user_info['user_id'] != GUEST) {
      $this->user_info['user_lastvisit'] = (!empty($this->user_info['user_lastaction'])) ? $this->user_info['user_lastaction'] : $this->current_time;
      $sql = "UPDATE ".USERS_TABLE."
              SET ".get_user_table_field("", "user_lastaction")." = $this->current_time, ".get_user_table_field("", "user_location")." = '$this->user_location', ".get_user_table_field("", "user_lastvisit")." = ".$this->user_info['user_lastvisit']."
              WHERE ".get_user_table_field("", "user_id")." = ".$this->user_info['user_id'];
      $site_db->query($sql);
    }
    $this->set_cookie_data("lastvisit", $this->user_info['user_lastvisit']);
    $this->set_cookie_data("userid", $this->user_info['user_id']);
    return true;
  }

  function login($user_name = "", $user_password = "", $auto_login = 0, $set_auto_login = 1) {
    global $site_db, $user_table_fields, $additional_user_fields;

    if (empty($user_name) || empty($user_password)) {
      return false;
    }
    $sql = "SELECT ".get_user_table_field("", "user_id").get_user_table_field(", ", "user_password")."
            FROM ".USERS_TABLE."
            WHERE ".get_user_table_field("", "user_name")." = '$user_name' AND ".get_user_table_field("", "user_level")." <> ".USER_AWAITING;
    $row = $site_db->query_firstrow($sql);

    $user_id = (isset($row[$user_table_fields['user_id']])) ? $row[$user_table_fields['user_id']] : GUEST;
    $user_password = md5($user_password);
    if ($user_id != GUEST) {
      if ($row[$user_table_fields['user_password']] == $user_password) {
        $sql = "UPDATE ".SESSIONS_TABLE."
                SET session_user_id = $user_id
                WHERE session_id = '".addslashes($this->session_id)."'";
        $site_db->query($sql);
        if ($set_auto_login) {
          $this->set_cookie_data("userpass", ($auto_login) ? $user_password : "");
        }
        $this->start_session($user_id, 1);
        return true;
      }
    }
    return false;
  }

  function logout($user_id) {
    global $site_db;
    $sql = "DELETE FROM ".SESSIONS_TABLE."
            WHERE session_id = '".addslashes($this->session_id)."' OR session_user_id = $user_id";
    $site_db->query($sql);
    $this->set_cookie_data("userpass", "", 0);
    $this->set_cookie_data("userid", GUEST);

    $this->session_info = array();

    return true;
  }

  function delete_old_sessions() {
    global $site_db;
    $expiry_time = $this->current_time - $this->session_timeout;
    $sql = "DELETE FROM ".SESSIONS_TABLE."
            WHERE session_lastaction < $expiry_time";
    $site_db->query($sql);

    return true;
  }

  function update_session() {
    global $site_db;

    $sql = "REPLACE INTO ".SESSIONS_TABLE."
           (session_id, session_user_id, session_lastaction, session_location, session_ip)
           VALUES
           ('".addslashes($this->session_id)."', ".$this->user_info['user_id'].", $this->current_time, '$this->user_location', '$this->user_ip')";
    $site_db->query($sql);

    $this->session_info['session_lastaction'] = $this->current_time;
    $this->session_info['session_location'] = $this->user_location;
    $this->session_info['session_ip'] = $this->user_ip;

    if ($this->user_info['user_id'] != GUEST) {
      $sql = "UPDATE ".USERS_TABLE."
              SET ".get_user_table_field("", "user_lastaction")." = $this->current_time, ".get_user_table_field("", "user_location")." = '$this->user_location'
              WHERE ".get_user_table_field("", "user_id")." = ".$this->user_info['user_id'];
      $site_db->query($sql);
    }
    return;
  }

  function return_session_info() {
    return $this->session_info;
  }

  function return_user_info() {
    return $this->user_info;
  }

  function freeze() {
    return;
  }

  function load_session_info() {
    if (@ini_get('register_globals')) {
      session_register($this->session_key);

      if (!isset($GLOBALS[$this->session_key])) {
        $GLOBALS[$this->session_key] = array();
      }

      $this->session_info = &$GLOBALS[$this->session_key];

    } else {
      if (isset($_SESSION)) {
        if (!isset($_SESSION[$this->session_key])) {
          $_SESSION[$this->session_key] = array();
        }

        $this->session_info = &$_SESSION[$this->session_key];

      } else {
        if (!isset($GLOBALS['HTTP_SESSION_VARS'][$this->session_key])) {
          $GLOBALS['HTTP_SESSION_VARS'][$this->session_key] = array();
        }

        $this->session_info = &$GLOBALS['HTTP_SESSION_VARS'][$this->session_key];
      }
    }

    if (!isset($this->session_info['session_ip'])) {
      $this->session_info = array();
      return false;
    }

    if ($this->mode == "get" && $this->session_info['session_ip'] != $this->user_ip) {
      if (function_exists('session_regenerate_id')) {
        @session_regenerate_id();
      }
      $this->get_session_id();
      $this->session_info = array();
      return false;
    }

    return $this->session_info;
  }

  function load_user_info($user_id = GUEST) {
    global $site_db, $user_table_fields;

    if ($user_id != GUEST) {
      $sql = "SELECT u.*, l.*
              FROM ".USERS_TABLE." u, ".LIGHTBOXES_TABLE." l
              WHERE ".get_user_table_field("u.", "user_id")." = $user_id AND l.user_id = ".get_user_table_field("u.", "user_id");
      $user_info = $site_db->query_firstrow($sql);
      if (!$user_info) {
        $sql = "SELECT *
                FROM ".USERS_TABLE."
                WHERE ".get_user_table_field("", "user_id")." = $user_id";
        $user_info = $site_db->query_firstrow($sql);
        if ($user_info) {
          $lightbox_id = get_random_key(LIGHTBOXES_TABLE, "lightbox_id");
          $sql = "INSERT INTO ".LIGHTBOXES_TABLE."
                  (lightbox_id, user_id, lightbox_lastaction, lightbox_image_ids)
                  VALUES
                  ('$lightbox_id', ".$user_info[$user_table_fields['user_id']].", $this->current_time, '')";
          $site_db->query($sql);
          $user_info['lightbox_lastaction'] = $this->current_time;
          $user_info['lightbox_image_ids'] = "";
        }
      }
    }
    if (empty($user_info[$user_table_fields['user_id']])) {
      $user_info = array();
      $user_info['user_id'] = GUEST;
      $user_info['user_level'] = GUEST;
      $user_info['user_lastaction'] = $this->current_time;
      $user_info['user_lastvisit'] = ($this->read_cookie_data("lastvisit")) ? $this->read_cookie_data("lastvisit") : $this->current_time;
    }
foreach ($user_table_fields as $key => $val) {
      if (isset($user_info[$val])) {
        $user_info[$key] = $user_info[$val];
      }
      elseif (!isset($user_info[$key])) {
        $user_info[$key] = "";
      }
    }
    foreach ($additional_user_fields as $key => $val)
    {
      if (!isset($user_info[$key]))
      {
        $user_info[$key] = "";
      }
    }
    return $user_info;
  }

  function set_session_var($var_name, $value) {
    $this->session_info[$var_name] = $value;
    return true;
  }

  function get_session_var($var_name) {
    if (isset($this->session_info[$var_name])) {
      return $this->session_info[$var_name];
    }

    return '';
  }

  function drop_session_var($var_name) {
    unset($this->session_info[$var_name]);
  }

  function get_user_ip() {
    global $HTTP_SERVER_VARS, $HTTP_ENV_VARS;
    $ip = (!empty($HTTP_SERVER_VARS['REMOTE_ADDR'])) ? $HTTP_SERVER_VARS['REMOTE_ADDR'] : ((!empty($HTTP_ENV_VARS['REMOTE_ADDR'])) ? $HTTP_ENV_VARS['REMOTE_ADDR'] : getenv("REMOTE_ADDR"));
    $ip = preg_replace("/[^\.0-9]+/", "", $ip);
    return substr($ip, 0, 50);
  }

  function get_user_location() {
    global $self_url;
    return (defined("IN_CP")) ? "Control Panel" : preg_replace(array("/([?|&])action=[^?|&]*/", "/([?|&])mode=[^?|&]*/", "/([?|&])phpinfo=[^?|&]*/", "/([?|&])printstats=[^?|&]*/", "/[?|&]".URL_ID."=[^?|&]*/", "/[?|&]l=[^?|&]*/", "/[&?]+$/"), array("", "", "", "", "", "", ""), addslashes($self_url));
  }

/* ORIGINAL CODE
  function url($url, $amp = "&amp;") {
    global $l;
    $dummy_array = explode("#", $url);
    $url = $dummy_array[0];

    if ($this->mode == "get" && !preg_match("/".SESSION_NAME."=/i", $url)) {
      $url .= preg_match("/\?/", $url) ? "$amp" : "?";
      $url .= SESSION_NAME."=".$this->session_id;
    }

    if (!empty($l)) {
      $url .= preg_match("/\?/", $url) ? "$amp" : "?";
      $url .= "l=".$l;
    }

    $url .= (isset($dummy_array[1])) ? "#".$dummy_array[1] : "";
    return $url;
  }
*/
  function url($url, $amp = "&amp;") {
    global $l, $user_info;
    $dummy_array = explode("#", $url);
    $url = $dummy_array[0];
    $url = str_replace('&amp;', '&', $url);
    if (!defined('IN_CP')) {
      if (strstr($url, 'index.php')) {
        $url = str_replace('index.php', '', $url);
      }
      elseif (strstr($url, 'search.php')) {
        if (strstr($url, 'page=')) {
          preg_match('#page=([0-9]+)&?#', $url, $matches);
          if (isset($matches[1])) {
            $split = explode('?', $url);
            $url = $split[0];
            $query = @$split[1];
            $url   = str_replace('search.php', 'search.'.$matches[1].'.htm', $url);
            $query = str_replace('page='.$matches[1].'&', '', $query);
            $query = str_replace('&page='.$matches[1], '', $query);
            $query = str_replace('page='.$matches[1], '', $query);
            if (!empty($query)) {
              $url .= '?' . $query;
            }
          }
        }
        else {
          $url = str_replace('search.php', 'search.htm', $url);
        }
      }
      elseif (strstr($url, 'lightbox.php')) {
        if (strstr($url, 'page=')) {
          preg_match('#page=([0-9]+)&?#', $url, $matches);
          if (isset($matches[1])) {
            $split = explode('?', $url);
            $url = $split[0];
            $query = @$split[1];
            $url   = str_replace('lightbox.php', 'lightbox.'.$matches[1].'.htm', $url);
            $query = str_replace('page='.$matches[1].'&', '', $query);
            $query = str_replace('&page='.$matches[1], '', $query);
            $query = str_replace('page='.$matches[1], '', $query);
            if (!empty($query)) {
                $url .= '?' . $query;
            }
          }
        }
        else {
          $url = str_replace('lightbox.php', 'lightbox.htm', $url);
        }
      }
      elseif (strstr($url, 'categories.php')) {
        if (strstr($url, 'cat_id=') && strstr($url, 'page=')) {
          preg_match('#cat_id=([0-9]+)&?#', $url, $matches1);
          preg_match('#page=([0-9]+)&?#', $url, $matches2);
          if (isset($matches1[1]) && isset($matches2[1])) {
            $split = explode('?', $url);
            $url = $split[0];
            $query = @$split[1];
            $url   = str_replace('categories.php', 'cat'.$matches1[1].'.'.$matches2[1].'.htm', $url);
            $query = str_replace('cat_id='.$matches1[1].'&', '', $query);
            $query = str_replace('&cat_id='.$matches1[1], '', $query);
            $query = str_replace('cat_id='.$matches1[1], '', $query);
            $query = str_replace('page='.$matches2[1].'&', '', $query);
            $query = str_replace('&page='.$matches2[1], '', $query);
            $query = str_replace('page='.$matches2[1], '', $query);
            if (!empty($query)) {
              $url .= '?' . $query;
            }
          }
        }
        elseif (strstr($url, 'cat_id=')) {
          preg_match('#cat_id=([0-9]+)&?#', $url, $matches);
          if (isset($matches[1])) {
            $split = explode('?', $url);
            $url = $split[0];
            $query = @$split[1];
            $cat_url = get_category_url($matches[1]);
            $url   = str_replace('categories.php', 'cat'.$cat_url.'.htm', $url);
            $query = str_replace('cat_id='.$matches[1].'&', '', $query);
            $query = str_replace('&cat_id='.$matches[1], '', $query);
            $query = str_replace('cat_id='.$matches[1], '', $query);
            if (!empty($query)) {
              $url .= '?' . $query;
            }
          }
        }
        else {
          $url = str_replace('categories.php', 'cat.htm', $url);
        }
      }
      elseif (strstr($url, 'details.php?image_id=')) {
        if (strstr($url, 'image_id=') && strstr($url, 'mode=')) {
          preg_match('#image_id=([0-9]+)&?#', $url, $matches1);
          preg_match('#mode=([a-zA-Z0-9]+)&?#', $url, $matches2);
          if (isset($matches1[1]) && isset($matches2[1])) {
            $split = explode('?', $url);
            $url = $split[0];
            $query = @$split[1];
            $url   = str_replace('details.php', 'img'.$matches1[1].'.'.$matches2[1].'.htm', $url);
            $query = str_replace('image_id='.$matches1[1].'&', '', $query);
            $query = str_replace('&image_id='.$matches1[1], '', $query);
            $query = str_replace('image_id='.$matches1[1], '', $query);
            $query = str_replace('mode='.$matches2[1].'&', '', $query);
            $query = str_replace('&mode='.$matches2[1], '', $query);
            $query = str_replace('mode='.$matches2[1], '', $query);
            if (!empty($query)) {
              $url .= '?' . $query;
            }
          }
        }
        else {
          preg_match('#image_id=([0-9]+)&?#', $url, $matches);
          if (isset($matches[1])) {
            $split = explode('?', $url);
            $url = $split[0];
            $query = @$split[1];
            $url   = str_replace('details.php', 'img'.get_image_url($matches[1]).'.htm', $url);
            $query = str_replace('image_id='.$matches[1].'&', '', $query);
            $query = str_replace('&image_id='.$matches[1], '', $query);
            $query = str_replace('image_id='.$matches[1], '', $query);
            if (!empty($query)) {
              $url .= '?' . $query;
            }
          }
        }
      }
      elseif (strstr($url, 'postcards.php?image_id=')) {
        preg_match('#image_id=([0-9]+)&?#', $url, $matches);
        if (isset($matches[1])) {
          $split = explode('?', $url);
          $url = $split[0];
          $query = @$split[1];
          $url   = str_replace('postcards.php', 'postcard.img'.$matches[1].'.htm', $url);
          $query = str_replace('image_id='.$matches[1].'&', '', $query);
          $query = str_replace('&image_id='.$matches[1], '', $query);
          $query = str_replace('image_id='.$matches[1], '', $query);
          if (!empty($query)) {
            $url .= '?' . $query;
          }
        }
      }
    }
    if ($this->mode == "get" && strstr($url, $this->session_id)) {
      $url .= strpos($url, '?') !== false ? '&' : '?';
      $url .= SESSION_NAME."=".$this->session_id;
    }
    if (!empty($l)) {
      $url .= strpos($url, '?') ? '&' : '?';
      $url .= "l=".$l;
    }
    $url = str_replace('&', $amp, $url);
    $url .= isset($dummy_array[1]) ? "#".$dummy_array[1] : "";
    return $url;
  }

} //end of class

//-----------------------------------------------------
//--- Start Session -----------------------------------
//-----------------------------------------------------
define('COOKIE_NAME', '4images_');
define('COOKIE_PATH', '');
define('COOKIE_DOMAIN', '');
define('COOKIE_SECURE', '0');

$site_sess = new Session();

// Get Userinfo
$session_info = $site_sess->return_session_info();
$user_info = $site_sess->return_user_info();

//-----------------------------------------------------
//--- Get User Caches ---------------------------------
//-----------------------------------------------------
$num_total_online = 0;
$num_visible_online = 0;
$num_invisible_online = 0;
$num_registered_online = 0;
$num_guests_online = 0;
$user_online_list = "";
$prev_user_ids = array();
$prev_session_ips = array();

if (defined("GET_USER_ONLINE") && ($config['display_whosonline'] == 1 || $user_info['user_level'] == ADMIN)) {
  $time_out = time() - 300;
  $sql = "SELECT s.session_user_id, s.session_lastaction, s.session_ip".get_user_table_field(", u.", "user_id").get_user_table_field(", u.", "user_level").get_user_table_field(", u.", "user_name").get_user_table_field(", u.", "user_invisible")."
      FROM ".SESSIONS_TABLE." s
      LEFT JOIN ".USERS_TABLE." u ON (".get_user_table_field("u.", "user_id")." = s.session_user_id)
      WHERE s.session_lastaction >= $time_out
      ORDER BY ".get_user_table_field("u.", "user_id")." ASC, s.session_ip ASC";
  $result = $site_db->query($sql);
  while ($row = $site_db->fetch_array($result)) {
    if ($row['session_user_id'] != GUEST && (isset($row[$user_table_fields['user_id']]) && $row[$user_table_fields['user_id']] != GUEST)) {
      if (!isset($prev_user_ids[$row['session_user_id']])) {
        $is_invisible = (isset($row[$user_table_fields['user_invisible']]) && $row[$user_table_fields['user_invisible']] == 1) ? 1 : 0;
        $invisibleuser = ($is_invisible) ? "*" : "";
        $username = (isset($row[$user_table_fields['user_level']]) && $row[$user_table_fields['user_level']] == ADMIN && $config['highlight_admin'] == 1) ? sprintf("<b>%s</b>", $row[$user_table_fields['user_name']]) : $row[$user_table_fields['user_name']];
        if (!$is_invisible || $user_info['user_level'] == ADMIN) {
          $user_online_list .= ($user_online_list != "") ? ", " : "";
          $user_profile_link = (!empty($url_show_profile)) ? preg_replace("/{user_id}/", $row['session_user_id'], $url_show_profile) : ROOT_PATH."member.php?action=showprofile&amp;".URL_USER_ID."=".$row['session_user_id'];
          $user_online_list .= "<a href=\"".$site_sess->url($user_profile_link)."\">".$username."</a>".$invisibleuser;
        }
        (!$is_invisible) ? $num_visible_online++ : $num_invisible_online++;
        $num_registered_online++;
      }
      $prev_user_ids[$row['session_user_id']] = 1;
    }
    else {
      if (!isset($prev_session_ips[$row['session_ip']])) {
        $num_guests_online++;
      }
    }
    $prev_session_ips[$row['session_ip']] = 1;
  }
  $num_total_online = $num_registered_online + $num_guests_online;
  //$num_invisible_online = $num_registered_online - $num_visible_online;

  $site_template->register_vars(array(
    "num_total_online" => $num_total_online,
    "num_invisible_online" => $num_invisible_online,
    "num_registered_online" => $num_registered_online,
    "num_guests_online" => $num_guests_online,
    "user_online_list" => $user_online_list,
    "lang_user_online" => str_replace('{num_total_online}', $num_total_online, $lang['user_online']),
    "lang_user_online_detail" => str_replace(array('{num_registered_online}','{num_invisible_online}','{num_guests_online}'), array($num_registered_online,$num_invisible_online,$num_guests_online), $lang['user_online_detail']),
  ));
  $whos_online = $site_template->parse_template("whos_online");
  $site_template->register_vars("whos_online", $whos_online);
  unset($whos_online);
  unset($prev_user_ids);
  unset($prev_session_ips);
}
//Mod_bmollet
/**
 * Get the category url
 * @param int $cat_id The id of the category
 * @param string $cat_url The current status of the URL
 */
function get_category_url($cat_id,$cat_url = '')
{
global $site_db;
$sql = "SELECT cat_name,cat_parent_id FROM ".CATEGORIES_TABLE." WHERE cat_id = '".$cat_id."'";
$result = $site_db->query($sql);
$row = $site_db->fetch_array($result);
$row['cat_name'] = strtr($row['cat_name'], "éèêàëâúóíáABCDEFGHIJKLMNOPQRSTUVWXYZ","eeeaeauoiaabcdefghijklmnopqrstuvwxyz");
$cat_url  = '-'.str_replace('+','-',urlencode($row['cat_name'])).'-'.$cat_id.$cat_url;
// if you want full path of category in url, put next line in comment
return $cat_url;
if( $row['cat_parent_id'] != 0)
{
return get_category_url($row['cat_parent_id'],$cat_url);
}
else
{
return $cat_url;
}
}
//Mod_bmollet
/**
 * Get the image url
 * @param int $image_id The id of the image
 */
function get_image_url($image_id)
{
global $site_db;
$sql = "SELECT cat_id,image_name FROM ".IMAGES_TABLE." WHERE image_id = '".$image_id."'";
$result = $site_db->query($sql);
$row = $site_db->fetch_array($result);
$row['image_name'] = strtr($row['image_name'], "éèêàëâúóíáABCDEFGHIJKLMNOPQRSTUVWXYZ","eeeaeauoiaabcdefghijklmnopqrstuvwxyz");
// if you want comlpete path to image in url, remove comment from following line
//return get_category_url($row['cat_id']).'-'.str_replace('+','-',urlencode($row['image_name'])).'-'.$image_id;
return '-'.str_replace('+','-',urlencode($row['image_name'])).'-'.$image_id;
}
?>
I haven't changed anything at the test site www.savegasforums.com/000TPX/ since the original post if you need to see the errors in action!

[V@no]

You've missed the very first step in sessions.php:
http://www.4homepages.de/forum/index.php?topic=24794.msg135804#msg135804