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car

D, too

had to hack a bit to make the code works properly; might be not that clean. If you're still interested, please mail me..

EDIT: please forget it, the code would be too dirty with forums containing more than one category.
EDIT2: in fact it could easily work, but I should do the sql request every time a page update the last-visited date... so.. on almost every page

mmh... not sure.. you are calling a function for each topic, i'm doing one sql query... moreover, it might be possible to do the same without that query, using a query that is already done later... and i'm using only one cookie

waiiiit i think I got it... it seems to work..  should be ready tonight (with only one small cookie, and one db query) Ok, here is a beginning; shows unread threads, but not unread forums, is not that perfect but seems to work:

add this to viewtopic.php, at the beginning:

if ($_COOKIE['unreadtopicscookie'] != '') {
    $unreadtopics = array();
    $unreadtopics = unserialize(stripslashes($_COOKIE['unreadtopicscookie']));
    unset($unreadtopics[array_search($_GET['id'], $unreadtopics)]);
    setcookie('unreadtopicscookie', serialize($unreadtopics), time()+60*60*24*335); /* One year cookie*/
}

and add this to viewforum.php (below the two includes):

if ($_COOKIE['unreadtopicscookie'] != '') {
    $unreadtopics = array();
    $unreadtopics = unserialize(stripslashes($_COOKIE['unreadtopicscookie']));

    $result = $db->query('SELECT id , last_post FROM '.$db->prefix.'topics') or error('Unable to fetch forum info', __FILE__, __LINE__, $db->error());

    while ($row = $db->fetch_row($result))
    if ($row[1]>$cur_user['last_visit'] && !in_array($row[0], $unreadtopics))
        array_push($unreadtopics, $row[0]);

    setcookie('unreadtopicscookie', serialize($unreadtopics), time()+60*60*24*335); /* One year cookie*/
} else {
    $unreadtopics = array();
}       

And finally in viewforum.php, where the test if the topic is read or not (should be approximatively at line 165), replace the condition with:
if (!$cookie['is_guest'] && in_array($cur_topic['id'], $unreadtopics) && $cur_topic['moved_to'] == null)

I'll try to cleanup all that stuff, and make it work in the listing of the forums, too... help would be much appreciated.
++

I forgot, turn Visit timeout to 0 in the admin panel.
BTW, in misc.php, add :
setcookie('unreadtopicscookie', '', time()+60*60*24*335);
in the else if ($action == 'markread') statement.

function get_pref_language_array($str_http_languages)
{
  $langs = explode(',',$str_http_languages);
  $qcandidat = 0;
  $nblang = count($langs);

  for ($i=0; $i<$nblang; $i++)
  {
    for ($j=0; $j<count($langs); $j++) {
      $lang = trim($langs[$j]); // Supprime les espaces avant et après $lang
      // Lang est de la forme langue;q=valeur
     
      if (!strstr($lang, ';') && $qcandidat != 1) {
        // Si la chaine ne contient pas de valeur de préférence q
        $candidat = $lang;
        $qcandidat = 1;
        $indicecandidat = $j;
      }
      else {
        // On récupère l'indice q
        $q = ereg_replace('.*;q=(.*)', '\\1', $lang);

        if ($q > $qcandidat) {
          $candidat = ereg_replace('(.*);.*', '\\1', $lang); ;
          $qcandidat = $q;
          $indicecandidat = $j;     
        }
      }
    }
   
    $resultat[$i] = $candidat;

    $qcandidat=0;
    // On supprime la valeur du tableau
    unset($langs[$indicecandidat]);   
    $langs = array_values($langs);
  }
  return $resultat;
}

I wrote that function once to detect the language, it's a bit more rfc compliant in that if I anderstand the above code correctly, you assume the first language given is the prefered one, wich is in most case true, but it's not defined that precisely in the RFC.
This function takes  $_SERVER['HTTP_ACCEPT_LANGUAGE'] as parameter, and returns an array containg the languages, beginning with the prefered one, and sorted by preference.

Hope this helps.

Yup, no, i don't think it's a good thing to use getimagesize... Imagine, with a lot of smileys, how heavy that would be... in my case, i juste removed the attriutes... Maybe, just adding to the faq "if you want to use smileys whose size is not 15*15, please remove the attributes with and hight there and there" would be enough.. no?

I want to add all the posts and users from one punbb forum to one other punbb forum

No, just answering any topic. I'm using v 1.1.3.