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    <?php
    /*
    * home.php
    * Description: example file for displaying latest posts and topics
    * by battye (for phpBB.com MOD Team)
    * September 29, 2009
    */

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

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




    /* create_where_clauses( int[] gen_id, String type )
    * This function outputs an SQL WHERE statement for use when grabbing
    * posts and topics */

    function create_where_clauses($gen_id, $type)
    {
    global $db, $auth;

    $size_gen_id = sizeof($gen_id);

    switch($type)
    {
    case 'forum':
    $type = 'forum_id';
    break;
    case 'topic':
    $type = 'topic_id';
    break;
    default:
    trigger_error('No type defined');
    }

    // Set $out_where to nothing, this will be used of the gen_id
    // size is empty, in other words "grab from anywhere" with
    // no restrictions
    $out_where = '';

    if ($size_gen_id > 0)
    {
    // Get a list of all forums the user has permissions to read
    $auth_f_read = array_keys($auth->acl_getf('f_read', true));

    if ($type == 'topic_id')
    {
    $sql = 'SELECT topic_id FROM ' . TOPICS_TABLE . '
    WHERE ' . $db->sql_in_set('topic_id', $gen_id) . '
    AND ' . $db->sql_in_set('forum_id', $auth_f_read);

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

    while ($row = $db->sql_fetchrow($result))
    {
    // Create an array with all acceptable topic ids
    $topic_id_list[] = $row['topic_id'];
    }

    unset($gen_id);

    $gen_id = $topic_id_list;
    $size_gen_id = sizeof($gen_id);
    }

    $j = 0;

    for ($i = 0; $i < $size_gen_id; $i++)
     {
    $id_check = (int) $gen_id[$i]; // If the type is topic, all checks have been made and the query can start to be built if( $type == 'topic_id' ) { $out_where .= ($j == 0) ? 'WHERE ' . $type . ' = ' . $id_check . ' ' : 'OR ' . $type . ' = ' . $id_check . ' '; } // If the type is forum, do the check to make sure the user has read permissions else if( $type == 'forum_id' && $auth->acl_get('f_read', $id_check) )
    {
    $out_where .= ($j == 0) ? 'WHERE ' . $type . ' = ' . $id_check . ' ' : 'OR ' . $type . ' = ' . $id_check . ' ';
    }

    $j++;
    }
    }

    if ($out_where == '' && $size_gen_id > 0)
    {
    trigger_error('A list of topics/forums has not been created');
    }

    return $out_where;
    }






    $search_limit = 5;

    $forum_id = array(2, 5);
    $forum_id_where = create_where_clauses($forum_id, 'forum');

    $topic_id = array(20, 50);
    $topic_id_where = create_where_clauses($topic_id, 'topic');






    $posts_ary = array(
    'SELECT' => 'p.*, t.*',

    'FROM' => array(
    POSTS_TABLE => 'p',
    ),

    'LEFT_JOIN' => array(
    array(
    'FROM' => array(TOPICS_TABLE => 't'),
    'ON' => 't.topic_first_post_id = p.post_id'
    )
    ),

    'WHERE' => str_replace( array('WHERE ', 'forum_id'), array('', 't.forum_id'), $forum_id_where) . '
    AND t.topic_status <> ' . ITEM_MOVED . '
    AND t.topic_approved = 1',

    'ORDER_BY' => 'p.post_id DESC',
    );

    $posts = $db->sql_build_query('SELECT', $posts_ary);

    $posts_result = $db->sql_query_limit($posts, $search_limit);

    while ($posts_row = $db->sql_fetchrow($posts_result))
    {
    $topic_title = $posts_row['topic_title'];
    $topic_author = get_username_string('full', $posts_row['topic_poster'], $posts_row['topic_first_poster_name'], $posts_row['topic_first_poster_colour']);
    $topic_date = $user->format_date($posts_row['topic_time']);
    $topic_link = append_sid("{$phpbb_root_path}viewtopic.$phpEx", "t=" . $posts_row['topic_id']);

    $post_text = nl2br($posts_row['post_text']);

    $bbcode = new bbcode(base64_encode($bbcode_bitfield));
    $bbcode->bbcode_second_pass($post_text, $posts_row['bbcode_uid'], $posts_row['bbcode_bitfield']);

    $post_text = smiley_text($post_text);

    $template->assign_block_vars('announcements', array(
    'TOPIC_TITLE' => censor_text($topic_title),
    'TOPIC_AUTHOR' => $topic_author,
    'TOPIC_DATE' => $topic_date,
    'TOPIC_LINK' => $topic_link,
    'POST_TEXT' => censor_text($post_text),
    ));
    }