Errore improvviso su forum phpbb

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Ciao a tutti.
Senza che apportassi alcuna modifica, da un giorno all'altro, due forum hanno smesso di funzionare e entrambi mi danno lo stesso tipo di errore.
Per semplicità poichè ritengo che abbiano lo stesso tipo di problema posto qui il riferimento a solo uno di essi.

Ecco l'errore:

Parse error: syntax error, unexpected T_STRING in /membri2/cli/index.php on line 16

Ovvero su define('IN_PHPBB', true);

Andando a controllare il file index non noto però alcun tipo di errore:

<?php/**
*
* @package phpBB3
* @version $Id: index.php,v 1.176 2007/10/05 14:30:06 acydburn Exp $
* @copyright (c) 2005 phpBB Group
* @license [url]http://opensource.org/licenses/gpl-license.php[/url] GNU Public License
*
*/

/**
*/

/**
* @ignore
*/
define('IN_PHPBB', true);
$phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './';
$phpEx = substr(strrchr(__FILE__, '.'), 1);
include($phpbb_root_path . 'common.' . $phpEx);
include($phpbb_root_path . 'includes/functions_display.' . $phpEx);

// Start session management
$user->session_begin();
$auth->acl($user->data);
$user->setup('viewforum');

display_forums('', $config['load_moderators']);

// Set some stats, get posts count from forums data if we... hum... retrieve all forums data
$total_posts    = $config['num_posts'];
$total_topics    = $config['num_topics'];
$total_users    = $config['num_users'];

$l_total_user_s = ($total_users == 0) ? 'TOTAL_USERS_ZERO' : 'TOTAL_USERS_OTHER';
$l_total_post_s = ($total_posts == 0) ? 'TOTAL_POSTS_ZERO' : 'TOTAL_POSTS_OTHER';
$l_total_topic_s = ($total_topics == 0) ? 'TOTAL_TOPICS_ZERO' : 'TOTAL_TOPICS_OTHER';

// Grab group details for legend display
if ($auth->acl_gets('a_group', 'a_groupadd', 'a_groupdel'))
{
    $sql = 'SELECT group_id, group_name, group_colour, group_type
        FROM ' . GROUPS_TABLE . '
        WHERE group_legend = 1
        ORDER BY group_name ASC';
}
else
{
    $sql = 'SELECT g.group_id, g.group_name, g.group_colour, g.group_type
        FROM ' . GROUPS_TABLE . ' g
        LEFT JOIN ' . USER_GROUP_TABLE . ' ug
            ON (
                g.group_id = ug.group_id
                AND ug.user_id = ' . $user->data['user_id'] . '
                AND ug.user_pending = 0
            )
        WHERE g.group_legend = 1
            AND (g.group_type <> ' . GROUP_HIDDEN . ' OR ug.user_id = ' . $user->data['user_id'] . ')
        ORDER BY g.group_name ASC';
}
$result = $db->sql_query($sql);

$legend = '';
while ($row = $db->sql_fetchrow($result))
{
    $colour_text = ($row['group_colour']) ? ' style="color:#' . $row['group_colour'] . '"' : '';

    if ($row['group_name'] == 'BOTS')
    {
        $legend .= (($legend != '') ? ', ' : '') . '<span' . $colour_text . '>' . $user->lang['G_BOTS'] . '</span>';
    }
    else
    {
        $legend .= (($legend != '') ? ', ' : '') . '[url="' . append_sid("]' . (($row['group_type'] == GROUP_SPECIAL) ? $user->lang['G_' . $row['group_name']] : $row['group_name']) . '[/url]';
    }
}
$db->sql_freeresult($result);

// Generate birthday list if required ...
$birthday_list = '';
if ($config['load_birthdays'] && $config['allow_birthdays'])
{
    $now = getdate(time() + $user->timezone + $user->dst - date('Z'));
    $sql = 'SELECT user_id, username, user_colour, user_birthday
        FROM ' . USERS_TABLE . "
        WHERE user_birthday LIKE '" . $db->sql_escape(sprintf('%2d-%2d-', $now['mday'], $now['mon'])) . "%'
            AND user_type IN (" . USER_NORMAL . ', ' . USER_FOUNDER . ')';
    $result = $db->sql_query($sql);

    while ($row = $db->sql_fetchrow($result))
    {
        $birthday_list .= (($birthday_list != '') ? ', ' : '') . get_username_string('full', $row['user_id'], $row['username'], $row['user_colour']);

        if ($age = (int) substr($row['user_birthday'], -4))
        {
            $birthday_list .= ' (' . ($now['year'] - $age) . ')';
        }
    }
    $db->sql_freeresult($result);
}

// Assign index specific vars
$template->assign_vars(array(
    'TOTAL_POSTS'    => sprintf($user->lang[$l_total_post_s], $total_posts),
    'TOTAL_TOPICS'    => sprintf($user->lang[$l_total_topic_s], $total_topics),
    'TOTAL_USERS'    => sprintf($user->lang[$l_total_user_s], $total_users),
    'NEWEST_USER'    => sprintf($user->lang['NEWEST_USER'], get_username_string('full', $config['newest_user_id'], $config['newest_username'], $config['newest_user_colour'])),

    'LEGEND'        => $legend,
    'BIRTHDAY_LIST'    => $birthday_list,

    'FORUM_IMG'                => $user->img('forum_read', 'NO_NEW_POSTS'),
    'FORUM_NEW_IMG'            => $user->img('forum_unread', 'NEW_POSTS'),
    'FORUM_LOCKED_IMG'        => $user->img('forum_read_locked', 'NO_NEW_POSTS_LOCKED'),
    'FORUM_NEW_LOCKED_IMG'    => $user->img('forum_unread_locked', 'NO_NEW_POSTS_LOCKED'),

    'S_LOGIN_ACTION'            => append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=login'),
    'S_DISPLAY_BIRTHDAY_LIST'    => ($config['load_birthdays']) ? true : false,

    'U_MARK_FORUMS'        => ($user->data['is_registered'] || $config['load_anon_lastread']) ? append_sid("{$phpbb_root_path}index.$phpEx", 'mark=forums') : '',
    'U_MCP'                => ($auth->acl_get('m_') || $auth->acl_getf_global('m_')) ? append_sid("{$phpbb_root_path}mcp.$phpEx", 'i=main&amp;mode=front', true, $user->session_id) : '')
);

// Output page
page_header($user->lang['INDEX']);

$template->set_filenames(array(
    'body' => 'index_body.html')
);

page_footer();

?>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <!--45cbf7ef428229d83249ceb297cd8cc2->

Ringrazio chiunque voglia prendersi la briga di darmi una mano

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