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<?php

/**

*

* @package phpBB3

* @copyright (c) 2005 phpBB Group

* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2

*

*/

/**

* @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);

// Start session management

$user->session_begin();

$auth->acl($user->data);

$user->setup('search');

// Define initial vars

$mode                        = request_var('mode', '');

$search_id                = request_var('search_id', '');

$start                        = max(request_var('start', 0), 0);

$post_id                = request_var('p', 0);

$topic_id                = request_var('t', 0);

$view                        = request_var('view', '');

$submit                        = request_var('submit', false);

$keywords                = utf8_normalize_nfc(request_var('keywords', '', true));

$add_keywords        = utf8_normalize_nfc(request_var('add_keywords', '', true));

$author                        = request_var('author', '', true);

$author_id                = request_var('author_id', 0);

$show_results        = ($topic_id) ? 'posts' : request_var('sr', 'posts');

$show_results        = ($show_results == 'posts') ? 'posts' : 'topics';

$search_terms        = request_var('terms', 'all');

$search_fields        = request_var('sf', 'all');

$search_child        = request_var('sc', true);

$sort_days                = request_var('st', 0);

$sort_key                = request_var('sk', 't');

$sort_dir                = request_var('sd', 'd');

$return_chars        = request_var('ch', ($topic_id) ? -1 : 300);

$search_forum        = request_var('fid', array(0));

// We put login boxes for the case if search_id is newposts, egosearch or unreadposts

// because a guest should be able to log in even if guests search is not permitted

switch ($search_id)

{

        // Egosearch is an author search

        case 'egosearch':

                $author_id = $user->data['user_id'];

                if ($user->data['user_id'] == ANONYMOUS)

                {

                        login_box('', $user->lang['LOGIN_EXPLAIN_EGOSEARCH']);

                }

        break;

        // Search for unread posts needs to be allowed and user to be logged in if topics tracking for guests is disabled

        case 'unreadposts':

                if (!$config['load_unreads_search'])

                {

                        $template->assign_var('S_NO_SEARCH', true);

                        trigger_error('NO_SEARCH_UNREADS');

                }

                else if (!$config['load_anon_lastread'] && !$user->data['is_registered'])

                {

                        login_box('', $user->lang['LOGIN_EXPLAIN_UNREADSEARCH']);

                }

        break;

        // The "new posts" search uses user_lastvisit which is user based, so it should require user to log in.

        case 'newposts':

                if ($user->data['user_id'] == ANONYMOUS)

                {

                        login_box('', $user->lang['LOGIN_EXPLAIN_NEWPOSTS']);

                }

        break;

        default:

                // There's nothing to do here for now ;)

        break;

}

// Is user able to search? Has search been disabled?

if (!$auth->acl_get('u_search') || !$auth->acl_getf_global('f_search') || !$config['load_search'])

{

        $template->assign_var('S_NO_SEARCH', true);

        trigger_error('NO_SEARCH');

}

// Check search load limit

if ($user->load && $config['limit_search_load'] && ($user->load > doubleval($config['limit_search_load'])))

{

        $template->assign_var('S_NO_SEARCH', true);

        trigger_error('NO_SEARCH_TIME');

}

// It is applicable if the configuration setting is non-zero, and the user cannot

// ignore the flood setting, and the search is a keyword search.

$interval = ($user->data['user_id'] == ANONYMOUS) ? $config['search_anonymous_interval'] : $config['search_interval'];

if ($interval && !in_array($search_id, array('unreadposts', 'unanswered', 'active_topics', 'egosearch')) && !$auth->acl_get('u_ignoreflood'))

{

        if ($user->data['user_last_search'] > time() - $interval)

        {

                $template->assign_var('S_NO_SEARCH', true);

                trigger_error('NO_SEARCH_TIME');

        }

}

// Define some vars

$limit_days                = array(0 => $user->lang['ALL_RESULTS'], 1 => $user->lang['1_DAY'], 7 => $user->lang['7_DAYS'], 14 => $user->lang['2_WEEKS'], 30 => $user->lang['1_MONTH'], 90 => $user->lang['3_MONTHS'], 180 => $user->lang['6_MONTHS'], 365 => $user->lang['1_YEAR']);

$sort_by_text        = array('a' => $user->lang['SORT_AUTHOR'], 't' => $user->lang['SORT_TIME'], 'f' => $user->lang['SORT_FORUM'], 'i' => $user->lang['SORT_TOPIC_TITLE'], 's' => $user->lang['SORT_POST_SUBJECT']);

$s_limit_days = $s_sort_key = $s_sort_dir = $u_sort_param = '';

gen_sort_selects($limit_days, $sort_by_text, $sort_days, $sort_key, $sort_dir, $s_limit_days, $s_sort_key, $s_sort_dir, $u_sort_param);

if ($keywords || $author || $author_id || $search_id || $submit)

{

        // clear arrays

        $id_ary = array();

        // If we are looking for authors get their ids

        $author_id_ary = array();

        $sql_author_match = '';

        if ($author_id)

        {

                $author_id_ary[] = $author_id;

        }

        else if ($author)

        {

                if ((strpos($author, '*') !== false) && (utf8_strlen(str_replace(array('*', '%'), '', $author)) < $config['min_search_author_chars']))

                {

                        trigger_error($user->lang('TOO_FEW_AUTHOR_CHARS', (int) $config['min_search_author_chars']));

                }

                $sql_where = (strpos($author, '*') !== false) ? ' username_clean ' . $db->sql_like_expression(str_replace('*', $db->any_char, utf8_clean_string($author))) : " username_clean = '" . $db->sql_escape(utf8_clean_string($author)) . "'";

                $sql = 'SELECT user_id

                        FROM ' . USERS_TABLE . "

                        WHERE $sql_where

                                AND user_type <> " . USER_IGNORE;

                $result = $db->sql_query_limit($sql, 100);

                while ($row = $db->sql_fetchrow($result))

                {

                        $author_id_ary[] = (int) $row['user_id'];

                }

                $db->sql_freeresult($result);

                $sql_where = (strpos($author, '*') !== false) ? ' post_username ' . $db->sql_like_expression(str_replace('*', $db->any_char, utf8_clean_string($author))) : " post_username = '" . $db->sql_escape(utf8_clean_string($author)) . "'";

                $sql = 'SELECT 1 as guest_post

                        FROM ' . POSTS_TABLE . "

                        WHERE $sql_where

                                AND poster_id = " . ANONYMOUS;

                $result = $db->sql_query_limit($sql, 1);

                $found_guest_post = $db->sql_fetchfield('guest_post');

                $db->sql_freeresult($result);

                if ($found_guest_post)

                {

                        $author_id_ary[] = ANONYMOUS;

                        $sql_author_match = (strpos($author, '*') !== false) ? ' ' . $db->sql_like_expression(str_replace('*', $db->any_char, utf8_clean_string($author))) : " = '" . $db->sql_escape(utf8_clean_string($author)) . "'";

                }

                if (!sizeof($author_id_ary))

                {

                        trigger_error('NO_SEARCH_RESULTS');

                }

        }

        // if we search in an existing search result just add the additional keywords. But we need to use "all search terms"-mode

        // so we can keep the old keywords in their old mode, but add the new ones as required words

        if ($add_keywords)

        {

                if ($search_terms == 'all')

                {

                        $keywords .= ' ' . $add_keywords;

                }

                else

                {

                        $search_terms = 'all';

                        $keywords = implode(' |', explode(' ', preg_replace('#\s+#u', ' ', $keywords))) . ' ' .$add_keywords;

                }

        }

        // Which forums should not be searched? Author searches are also carried out in unindexed forums

        if (empty($keywords) && sizeof($author_id_ary))

        {

                $ex_fid_ary = array_keys($auth->acl_getf('!f_read', true));

        }

        else

        {

                $ex_fid_ary = array_unique(array_merge(array_keys($auth->acl_getf('!f_read', true)), array_keys($auth->acl_getf('!f_search', true))));

        }

        $not_in_fid = (sizeof($ex_fid_ary)) ? 'WHERE ' . $db->sql_in_set('f.forum_id', $ex_fid_ary, true) . " OR (f.forum_password <> '' AND fa.user_id <> " . (int) $user->data['user_id'] . ')' : "";

        $sql = 'SELECT f.forum_id, f.forum_name, f.parent_id, f.forum_type, f.right_id, f.forum_password, f.forum_flags, fa.user_id

                FROM ' . FORUMS_TABLE . ' f

                LEFT JOIN ' . FORUMS_ACCESS_TABLE . " fa ON (fa.forum_id = f.forum_id

                        AND fa.session_id = '" . $db->sql_escape($user->session_id) . "')

                $not_in_fid

                ORDER BY f.left_id";

        $result = $db->sql_query($sql);

        $right_id = 0;

        $reset_search_forum = true;

        while ($row = $db->sql_fetchrow($result))

        {

                if ($row['forum_password'] && $row['user_id'] != $user->data['user_id'])

                {

                        $ex_fid_ary[] = (int) $row['forum_id'];

                        continue;

                }

                // Exclude forums from active topics

                if (!($row['forum_flags'] & FORUM_FLAG_ACTIVE_TOPICS) && ($search_id == 'active_topics'))

                {

                        $ex_fid_ary[] = (int) $row['forum_id'];

                        continue;

                }

                if (sizeof($search_forum))

                {

                        if ($search_child)

                        {

                                if (in_array($row['forum_id'], $search_forum) && $row['right_id'] > $right_id)

                                {

                                        $right_id = (int) $row['right_id'];

                                }

                                else if ($row['right_id'] < $right_id)

                                {

                                        continue;

                                }

                        }

                        if (!in_array($row['forum_id'], $search_forum))

                        {

                                $ex_fid_ary[] = (int) $row['forum_id'];

                                $reset_search_forum = false;

                        }

                }

        }

        $db->sql_freeresult($result);

        // find out in which forums the user is allowed to view approved posts

        if ($auth->acl_get('m_approve'))

        {

                $m_approve_fid_ary = array(-1);

                $m_approve_fid_sql = '';

        }

        else if ($auth->acl_getf_global('m_approve'))

        {

                $m_approve_fid_ary = array_diff(array_keys($auth->acl_getf('!m_approve', true)), $ex_fid_ary);

                $m_approve_fid_sql = ' AND (p.post_approved = 1' . ((sizeof($m_approve_fid_ary)) ? ' OR ' . $db->sql_in_set('p.forum_id', $m_approve_fid_ary, true) : '') . ')';

        }

        else

        {

                $m_approve_fid_ary = array();

                $m_approve_fid_sql = ' AND p.post_approved = 1';

        }

        if ($reset_search_forum)

        {

                $search_forum = array();

        }

        // Select which method we'll use to obtain the post_id or topic_id information

        $search_type = $config['search_type'];

        if (!class_exists($search_type))

        {

                trigger_error('NO_SUCH_SEARCH_MODULE');

        }

        // We do some additional checks in the module to ensure it can actually be utilised

        $error = false;

        $search = new $search_type($error);

        if ($error)

        {

                trigger_error($error);

        }

        // let the search module split up the keywords

        if ($keywords)

        {

                $correct_query = $search->split_keywords($keywords, $search_terms);

                if (!$correct_query || (empty($search->search_query) && !sizeof($author_id_ary) && !$search_id))

                {

                        $ignored = (sizeof($search->common_words)) ? sprintf($user->lang['IGNORED_TERMS_EXPLAIN'], implode(' ', $search->common_words)) . '<br />' : '';

                        trigger_error($ignored . $user->lang('NO_KEYWORDS', $user->lang('CHARACTERS', (int) $search->word_length['min']), $user->lang('CHARACTERS', (int) $search->word_length['max'])));

                }

        }

        if (!$keywords && sizeof($author_id_ary))

        {

                // if it is an author search we want to show topics by default

                $show_results = ($topic_id) ? 'posts' : request_var('sr', ($search_id == 'egosearch') ? 'topics' : 'posts');

                $show_results = ($show_results == 'posts') ? 'posts' : 'topics';

        }

        // define some variables needed for retrieving post_id/topic_id information

        $sort_by_sql = array('a' => 'u.username_clean', 't' => (($show_results == 'posts') ? 'p.post_time' : 't.topic_last_post_time'), 'f' => 'f.forum_id', 'i' => 't.topic_title', 's' => (($show_results == 'posts') ? 'p.post_subject' : 't.topic_title'));

        // pre-made searches

        $sql = $field = $l_search_title = '';

        if ($search_id)

        {

                switch ($search_id)

                {

                        // Oh holy Bob, bring us some activity...

                        case 'active_topics':

                                $l_search_title = $user->lang['SEARCH_ACTIVE_TOPICS'];

                                $show_results = 'topics';

                                $sort_key = 't';

                                $sort_dir = 'd';

                                $sort_days = request_var('st', 7);

                                $sort_by_sql['t'] = 't.topic_last_post_time';

                                gen_sort_selects($limit_days, $sort_by_text, $sort_days, $sort_key, $sort_dir, $s_limit_days, $s_sort_key, $s_sort_dir, $u_sort_param);

                                $s_sort_key = $s_sort_dir = '';

                                $last_post_time_sql = ($sort_days) ? ' AND t.topic_last_post_time > ' . (time() - ($sort_days * 24 * 3600)) : '';

                                $sql = 'SELECT t.topic_last_post_time, t.topic_id

                                        FROM ' . TOPICS_TABLE . " t

                                        WHERE t.topic_moved_id = 0

                                                $last_post_time_sql

                                                " . str_replace(array('p.', 'post_'), array('t.', 'topic_'), $m_approve_fid_sql) . '

                                                ' . ((sizeof($ex_fid_ary)) ? ' AND ' . $db->sql_in_set('t.forum_id', $ex_fid_ary, true) : '') . '

                                        ORDER BY t.topic_last_post_time DESC';

                                $field = 'topic_id';

                        break;

                        case 'unanswered':

                                $l_search_title = $user->lang['SEARCH_UNANSWERED'];

                                $show_results = request_var('sr', 'topics');

                                $show_results = ($show_results == 'posts') ? 'posts' : 'topics';

                                $sort_by_sql['t'] = ($show_results == 'posts') ? 'p.post_time' : 't.topic_last_post_time';

                                $sort_by_sql['s'] = ($show_results == 'posts') ? 'p.post_subject' : 't.topic_title';

                                $sql_sort = 'ORDER BY ' . $sort_by_sql[$sort_key] . (($sort_dir == 'a') ? ' ASC' : ' DESC');

                                $sort_join = ($sort_key == 'f') ? FORUMS_TABLE . ' f, ' : '';

                                $sql_sort = ($sort_key == 'f') ? ' AND f.forum_id = p.forum_id ' . $sql_sort : $sql_sort;

                                if ($sort_days)

                                {

                                        $last_post_time = 'AND p.post_time > ' . (time() - ($sort_days * 24 * 3600));

                                }

                                else

                                {

                                        $last_post_time = '';

                                }

                                if ($sort_key == 'a')

                                {

                                        $sort_join = USERS_TABLE . ' u, ';

                                        $sql_sort = ' AND u.user_id = p.poster_id ' . $sql_sort;

                                }

                                if ($show_results == 'posts')

                                {

                                        $sql = "SELECT p.post_id

                                                FROM $sort_join" . POSTS_TABLE . ' p, ' . TOPICS_TABLE . " t

                                                WHERE t.topic_replies = 0

                                                        AND p.topic_id = t.topic_id

                                                        $last_post_time

                                                        $m_approve_fid_sql

                                                        " . ((sizeof($ex_fid_ary)) ? ' AND ' . $db->sql_in_set('p.forum_id', $ex_fid_ary, true) : '') . "

                                                        $sql_sort";

                                        $field = 'post_id';

                                }

                                else

                                {

                                        $sql = 'SELECT DISTINCT ' . $sort_by_sql[$sort_key] . ", p.topic_id

                                                FROM $sort_join" . POSTS_TABLE . ' p, ' . TOPICS_TABLE . " t

                                                WHERE t.topic_replies = 0

                                                        AND t.topic_moved_id = 0

                                                        AND p.topic_id = t.topic_id

                                                        $last_post_time

                                                        $m_approve_fid_sql

                                                        " . ((sizeof($ex_fid_ary)) ? ' AND ' . $db->sql_in_set('p.forum_id', $ex_fid_ary, true) : '') . "

                                                $sql_sort";

                                        $field = 'topic_id';

                                }

                        break;

                        case 'unreadposts':

                                $l_search_title = $user->lang['SEARCH_UNREAD'];

                                // force sorting

                                $show_results = 'topics';

                                $sort_key = 't';

                                $sort_by_sql['t'] = 't.topic_last_post_time';

                                $sql_sort = 'ORDER BY ' . $sort_by_sql[$sort_key] . (($sort_dir == 'a') ? ' ASC' : ' DESC');

                                $sql_where = 'AND t.topic_moved_id = 0

                                        ' . str_replace(array('p.', 'post_'), array('t.', 'topic_'), $m_approve_fid_sql) . '

                                        ' . ((sizeof($ex_fid_ary)) ? 'AND ' . $db->sql_in_set('t.forum_id', $ex_fid_ary, true) : '');

                                gen_sort_selects($limit_days, $sort_by_text, $sort_days, $sort_key, $sort_dir, $s_limit_days, $s_sort_key, $s_sort_dir, $u_sort_param);

                                $s_sort_key = $s_sort_dir = $u_sort_param = $s_limit_days = '';

                        break;

                        case 'newposts':

                                $l_search_title = $user->lang['SEARCH_NEW'];

                                // force sorting

                                $show_results = (request_var('sr', 'topics') == 'posts') ? 'posts' : 'topics';

                                $sort_key = 't';

                                $sort_dir = 'd';

                                $sort_by_sql['t'] = ($show_results == 'posts') ? 'p.post_time' : 't.topic_last_post_time';

                                $sql_sort = 'ORDER BY ' . $sort_by_sql[$sort_key] . (($sort_dir == 'a') ? ' ASC' : ' DESC');

                                gen_sort_selects($limit_days, $sort_by_text, $sort_days, $sort_key, $sort_dir, $s_limit_days, $s_sort_key, $s_sort_dir, $u_sort_param);

                                $s_sort_key = $s_sort_dir = $u_sort_param = $s_limit_days = '';

                                if ($show_results == 'posts')

                                {

                                        $sql = 'SELECT p.post_id

                                                FROM ' . POSTS_TABLE . ' p

                                                WHERE p.post_time > ' . $user->data['user_lastvisit'] . "

                                                        $m_approve_fid_sql

                                                        " . ((sizeof($ex_fid_ary)) ? ' AND ' . $db->sql_in_set('p.forum_id', $ex_fid_ary, true) : '') . "

                                                $sql_sort";

                                        $field = 'post_id';

                                }

                                else

                                {

                                        $sql = 'SELECT t.topic_id

                                                FROM ' . TOPICS_TABLE . ' t

                                                WHERE t.topic_last_post_time > ' . $user->data['user_lastvisit'] . '

                                                        AND t.topic_moved_id = 0

                                                        ' . str_replace(array('p.', 'post_'), array('t.', 'topic_'), $m_approve_fid_sql) . '

                                                        ' . ((sizeof($ex_fid_ary)) ? 'AND ' . $db->sql_in_set('t.forum_id', $ex_fid_ary, true) : '') . "

                                                $sql_sort";

/*

                [Fix] queued replies missing from "view new posts" (Bug #42705 - Patch by Paul)

                - Creates temporary table, query is far from optimized

                                        $sql = 'SELECT t.topic_id

                                                FROM ' . TOPICS_TABLE . ' t, ' . POSTS_TABLE . ' p

                                                WHERE p.post_time > ' . $user->data['user_lastvisit'] . '

                                                        AND t.topic_id = p.topic_id

                                                        AND t.topic_moved_id = 0

                                                        ' . $m_approve_fid_sql . '

                                                        ' . ((sizeof($ex_fid_ary)) ? 'AND ' . $db->sql_in_set('t.forum_id', $ex_fid_ary, true) : '') . "

                                                GROUP BY t.topic_id

                                                $sql_sort";

*/

                                        $field = 'topic_id';

                                }

                        break;

                        case 'egosearch':

                                $l_search_title = $user->lang['SEARCH_SELF'];

                        break;

                }

        }

        // show_results should not change after this

        $per_page = ($show_results == 'posts') ? $config['posts_per_page'] : $config['topics_per_page'];

        $total_match_count = 0;

        if ($search_id)

        {

                if ($sql)

                {

                        // only return up to 1000 ids (the last one will be removed later)

                        $result = $db->sql_query_limit($sql, 1001 - $start, $start);

                        while ($row = $db->sql_fetchrow($result))

                        {

                                $id_ary[] = (int) $row[$field];

                        }

                        $db->sql_freeresult($result);

                        $total_match_count = sizeof($id_ary) + $start;

                        $id_ary = array_slice($id_ary, 0, $per_page);

                }

                else if ($search_id == 'unreadposts')

                {

                        $id_ary = array_keys(get_unread_topics($user->data['user_id'], $sql_where, $sql_sort, 1001 - $start, $start));

                        $total_match_count = sizeof($id_ary) + $start;

                        $id_ary = array_slice($id_ary, 0, $per_page);

                }

                else

                {

                        $search_id = '';

                }

        }

        // make sure that some arrays are always in the same order

        sort($ex_fid_ary);

        sort($m_approve_fid_ary);

        sort($author_id_ary);

        if (!empty($search->search_query))

        {

                $total_match_count = $search->keyword_search($show_results, $search_fields, $search_terms, $sort_by_sql, $sort_key, $sort_dir, $sort_days, $ex_fid_ary, $m_approve_fid_ary, $topic_id, $author_id_ary, $sql_author_match, $id_ary, $start, $per_page);

        }

        else if (sizeof($author_id_ary))

        {

                $firstpost_only = ($search_fields === 'firstpost' || $search_fields == 'titleonly') ? true : false;

                $total_match_count = $search->author_search($show_results, $firstpost_only, $sort_by_sql, $sort_key, $sort_dir, $sort_days, $ex_fid_ary, $m_approve_fid_ary, $topic_id, $author_id_ary, $sql_author_match, $id_ary, $start, $per_page);

        }

        // For some searches we need to print out the "no results" page directly to allow re-sorting/refining the search options.

        if (!sizeof($id_ary) && !$search_id)

        {

                trigger_error('NO_SEARCH_RESULTS');

        }

        $sql_where = '';

        if (sizeof($id_ary))

        {

                $sql_where .= $db->sql_in_set(($show_results == 'posts') ? 'p.post_id' : 't.topic_id', $id_ary);

                $sql_where .= (sizeof($ex_fid_ary)) ? ' AND (' . $db->sql_in_set('f.forum_id', $ex_fid_ary, true) . ' OR f.forum_id IS NULL)' : '';

                $sql_where .= ($show_results == 'posts') ? $m_approve_fid_sql : str_replace(array('p.post_approved', 'p.forum_id'), array('t.topic_approved', 't.forum_id'), $m_approve_fid_sql);

        }

        if ($show_results == 'posts')

        {

                include($phpbb_root_path . 'includes/functions_posting.' . $phpEx);

        }

        else

        {

                include($phpbb_root_path . 'includes/functions_display.' . $phpEx);

        }

        $user->add_lang('viewtopic');

        // Grab icons

        $icons = $cache->obtain_icons();

        // Output header

        if ($search_id && ($total_match_count > 1000))

        {

                // limit the number to 1000 for pre-made searches

                $total_match_count--;

                $l_search_matches = $user->lang('FOUND_MORE_SEARCH_MATCHES', (int) $total_match_count);

        }

        else

        {

                $l_search_matches = $user->lang('FOUND_SEARCH_MATCHES', (int) $total_match_count);

        }

        // define some vars for urls

        $hilit = implode('|', explode(' ', preg_replace('#\s+#u', ' ', str_replace(array('+', '-', '|', '(', ')', '"'), ' ', $keywords))));

        // Do not allow *only* wildcard being used for hilight

        $hilit = (strspn($hilit, '*') === strlen($hilit)) ? '' : $hilit;

        $u_hilit = urlencode(htmlspecialchars_decode(str_replace('|', ' ', $hilit)));

        $u_show_results = '&sr=' . $show_results;

        $u_search_forum = implode('&fid%5B%5D=', $search_forum);

        $u_search = append_sid("{$phpbb_root_path}search.$phpEx", $u_sort_param . $u_show_results);

        $u_search .= ($search_id) ? '&search_id=' . $search_id : '';

        $u_search .= ($u_hilit) ? '&keywords=' . urlencode(htmlspecialchars_decode($keywords)) : '';

        $u_search .= ($search_terms != 'all') ? '&terms=' . $search_terms : '';

        $u_search .= ($topic_id) ? '&t=' . $topic_id : '';

        $u_search .= ($author) ? '&author=' . urlencode(htmlspecialchars_decode($author)) : '';

        $u_search .= ($author_id) ? '&author_id=' . $author_id : '';

        $u_search .= ($u_search_forum) ? '&fid%5B%5D=' . $u_search_forum : '';

        $u_search .= (!$search_child) ? '&sc=0' : '';

        $u_search .= ($search_fields != 'all') ? '&sf=' . $search_fields : '';

        $u_search .= ($return_chars != 300) ? '&ch=' . $return_chars : '';

        $template->assign_vars(array(

                'SEARCH_TITLE'                => $l_search_title,

                'SEARCH_MATCHES'        => $l_search_matches,

                'SEARCH_WORDS'                => $search->search_query,

                'IGNORED_WORDS'                => (sizeof($search->common_words)) ? implode(' ', $search->common_words) : '',

                'PAGINATION'                => generate_pagination($u_search, $total_match_count, $per_page, $start),

                'PAGE_NUMBER'                => on_page($total_match_count, $per_page, $start),

                'TOTAL_MATCHES'                => $total_match_count,

                'SEARCH_IN_RESULTS'        => ($search_id) ? false : true,

                'S_SELECT_SORT_DIR'                => $s_sort_dir,

                'S_SELECT_SORT_KEY'                => $s_sort_key,

                'S_SELECT_SORT_DAYS'        => $s_limit_days,

                'S_SEARCH_ACTION'                => $u_search,

                'S_SHOW_TOPICS'                        => ($show_results == 'posts') ? false : true,

                'GOTO_PAGE_IMG'                => $user->img('icon_post_target', 'GOTO_PAGE'),

                'NEWEST_POST_IMG'        => $user->img('icon_topic_newest', 'VIEW_NEWEST_POST'),

                'REPORTED_IMG'                => $user->img('icon_topic_reported', 'TOPIC_REPORTED'),

                'UNAPPROVED_IMG'        => $user->img('icon_topic_unapproved', 'TOPIC_UNAPPROVED'),

                'LAST_POST_IMG'                => $user->img('icon_topic_latest', 'VIEW_LATEST_POST'),

                'U_SEARCH_WORDS'        => $u_search,

        ));

        if ($sql_where)

        {

                if ($show_results == 'posts')

                {

                        // @todo Joining this query to the one below?

                        $sql = 'SELECT zebra_id, friend, foe

                                FROM ' . ZEBRA_TABLE . '

                                WHERE user_id = ' . $user->data['user_id'];

                        $result = $db->sql_query($sql);

                        $zebra = array();

                        while ($row = $db->sql_fetchrow($result))

                        {

                                $zebra[($row['friend']) ? 'friend' : 'foe'][] = $row['zebra_id'];

                        }

                        $db->sql_freeresult($result);

                        $sql = 'SELECT p.*, f.forum_id, f.forum_name, t.*, u.username, u.username_clean, u.user_sig, u.user_sig_bbcode_uid, u.user_colour

                                FROM ' . POSTS_TABLE . ' p

                                        LEFT JOIN ' . TOPICS_TABLE . ' t ON (p.topic_id = t.topic_id)

                                        LEFT JOIN ' . FORUMS_TABLE . ' f ON (p.forum_id = f.forum_id)

                                        LEFT JOIN ' . USERS_TABLE . " u ON (p.poster_id = u.user_id)

                                WHERE $sql_where";

                }

                else

                {

                        $sql_from = TOPICS_TABLE . ' t

                                LEFT JOIN ' . FORUMS_TABLE . ' f ON (f.forum_id = t.forum_id)

                                ' . (($sort_key == 'a') ? ' LEFT JOIN ' . USERS_TABLE . ' u ON (u.user_id = t.topic_poster) ' : '');

                        $sql_select = 't.*, f.forum_id, f.forum_name';

                        if ($user->data['is_registered'])

                        {

                                if ($config['load_db_track'] && $author_id !== $user->data['user_id'])

                                {

                                        $sql_from .= ' LEFT JOIN ' . TOPICS_POSTED_TABLE . ' tp ON (tp.user_id = ' . $user->data['user_id'] . '

                                                AND t.topic_id = tp.topic_id)';

                                        $sql_select .= ', tp.topic_posted';