Need help reducing queries

[Dark Jim]

I made and submitted a hack "User Icons 1.1" just recently here but it needs quite a lot of queries on a few pages. For example it displays icons next to the user names on the who's online. The code in online.php looks like this currently:

PHP Code:

  $allusers= $DB_site->query("SELECT user.username, session.location, session.lastactivity, user.userid, user.usergroupid, user.invisible, session.host, user.showemail, user.receivepm
                              FROM session, user
                              ". iif($WOLguests, " LEFT JOIN user USING (userid) ", ",user") ."
                              WHERE session.lastactivity > $datecut
                              ". iif(!$WOLguests, " AND session.userid = user.userid", "") ."
                              ORDER BY user.username
                              ");

  $moderators = $DB_site->query("SELECT DISTINCT userid FROM moderator");
  while ($mods = $DB_site->fetch_array($moderators)) {
    $mod[$mods[userid]] = 1;
  }

  $count = 0;
  while ($user = $DB_site->fetch_array($allusers)) {
    if ($user['userid']) { // Reg'd Member
      $key = $user['userid'];
      if (($userinfo["$key"]['lastactivity'] < $user['lastactivity']) or !$userinfo["$key"]['lastactivity']) {
        $userinfo["$key"]['realname'] = $user['username'];
        
      $iconavatarurl=geticonavatarurl($user['userid']);
      if ($iconavatarurl!="") {
        $iconavatar = "<img src=\"$iconavatarurl\" border=\"0\" alt=\"\">";
      } else {
        $iconavatar = "";
      }  
      if ($bbuserinfo[userid]>0 and !($bbuserinfo[showiconavatars])) {
        $iconavatar = "";
      }       
        
        if ($user['usergroupid'] == 6 and $highlightadmin) {
          $userinfo["$key"]['username'] = "$iconavatar<font color={whosonlineowner}><b><i>$user[username]</i></b></font>"; 


Note the function "geticonavatarurl" which looks like this:

PHP Code:

// ###################### Start geticonavatarurl #######################
function geticonavatarurl($userid) {
  global $DB_site,$session;

  if ($iconavatarinfo=$DB_site->query_first("SELECT user.iconavatarid,iconavatarpath,NOT ISNULL(iconavatardata) AS hascustom,customiconavatar.dateline
                                         FROM user
                                         LEFT JOIN iconavatar ON iconavatar.iconavatarid=user.iconavatarid
                                         LEFT JOIN customiconavatar ON customiconavatar.userid=user.userid
                                         WHERE user.userid='$userid'")) {
    if ($iconavatarinfo[iconavatarpath]!="") {
      return $iconavatarinfo[iconavatarpath];
    } else if ($iconavatarinfo['hascustom']) {
      return "iconavatar.php?userid=$userid&dateline=$iconavatarinfo[dateline]";
    } else {
      return '';
    }
  }
} 


Is it possible to merge those 2 parts of code into 1 so it only needs 1 query to display the who's online instead of 1+ 1 for each icon. I tried some stuff myself but I'm really lost here.