Sidebar / whos online block

$replace = array('<strong>$1</strong>',
                     '<em>$1</em>',
                     '<span class="bbu">$1</span>',
                     'handle_url_tag(\'$1\')',
                     'handle_url_tag(\'$1\', \'$2\')',
                     '<a href="mailto:$1">$1</a>',
                     '<a href="mailto:$1">$2</a>',
                     '<ul>$1</ul>',
                     '<ol>$1</ol>',
                     '<li>?  $1</li>',
                     '<li>$1</li>',
                     '<span style="color: $1">$2</span>',
                     '<span style="font-family: $1">$2</span>',
                     '<span style="font-family: $1">',
                     '</span>',
                     '<p align="$1">$2</p>',
                     '<span style="$1">$2</span>',
                     '<hr />',
                     '<hr />',
                     '<table>$1</table>',
                     '<div align="center">$1</div>',
                     '<tr>$1</tr>',
                     '<td>$1</td>',
                     '<del>$1</del>',
                     '<pre>$1</pre>',
                     '<pre>',
                     '</pre>',
                     '<sup>$1</sup>',
                     '<sub>$1</sub>',
                     '<span style="font-size: $1pt;">$2</span>',
                     '<span style="font-size: $1pt;">$2',
                     '</span>',
                     '<span style="background-color: #FFFF00; color: #000000">$1</span>');

    // This thing takes a while! :)
    $text = preg_replace($pattern, $replace, $text); //THIS IS LINE 383

    return $text;

else
    {
        require PUN_ROOT.'lang/'.$pun_user['language'].'/index.php';
        $result = $db->query('SELECT COUNT(id)-1 FROM '.$db->prefix.'users') or error('Unable to fetch total user count', __FILE__, __LINE__, $db->error());
        $stats['total_users'] = $db->result($result);
        
        $result = $db->query('SELECT id, username FROM '.$db->prefix.'users ORDER BY registered DESC LIMIT 1') or error('Unable to fetch newest registered user', __FILE__, __LINE__, $db->error());
        $stats['last_user'] = $db->fetch_assoc($result);
        
        $result = $db->query('SELECT SUM(num_topics), SUM(num_posts) FROM '.$db->prefix.'forums') or error('Unable to fetch topic/post count', __FILE__, __LINE__, $db->error());
        list($stats['total_topics'], $stats['total_posts']) = $db->fetch_row($result);
        
        if ($pun_config['o_users_online'] == '1')
        {
            // Fetch users online info and generate strings for output
            $num_guests = 0;
            $users = array();
            $online = array();
            $result = $db->query('SELECT user_id, ident FROM '.$db->prefix.'online WHERE idle=0 ORDER BY ident', true) or error('Unable to fetch online list', __FILE__, __LINE__, $db->error());
        
            while ($pun_user_online = $db->fetch_assoc($result))
            {
                if ($pun_user_online['user_id'] > 1)
                    $users[] = "\n\t\t\t\t".'<a href="profile.php?id='.$pun_user_online['user_id'].'">'.pun_htmlspecialchars($pun_user_online['ident']).'</a><br />';
                else
                    ++$num_guests;
            }
        
            $num_users = count($users);
            $online[] = "\t\t\t\t".$lang_index['Users online'].': <strong>'.$num_users.'</strong><br />'."\n\t\t\t\t".$lang_index['Guests online'].': <strong>'.$num_guests.'</strong>'."\n\t\t\t"."\n";
        
        
            if ($num_users > 0 && $num_users < 10)
                $online[] = "\t\t\t"."\n\t\t\t\t".'<br /><strong>'.$lang_index['Online'].': </strong>'."\t\t\t\t".implode($users)."\n";
            else
                $online[] = "\t\t\t".'<div class="clearer"></div>'."\n";
        
        }
        
        return 'Welcome <strong>'.$pun_user['username'].'</strong><br />
            <a href="login.php?action=out&id='.$pun_user['id'].'">'.$lang_common['Logout'].'</a><br /><br />
            '.implode($online,'').'<br />
            Users: <strong>'. $stats['total_users'].'</strong><br />
            Topics: <strong>'.$stats['total_topics'].'</strong><br />
            Posts: <strong>'.$stats['total_posts'].'</strong><br />';
    }
}