PC World 2008 April (DVD)/PCWorld_2008-04_DVD.iso/temadvd/phpbb/phpBB-2.0.22.exe/phpBB2/includes/prune.php

PHP Script | 2006-12-19 | 4.8 KB | 175 lines

<?php
/***************************************************************************
*                                 prune.php
*                            -------------------
*   begin                : Thursday, June 14, 2001
*   copyright            : (C) 2001 The phpBB Group
*   email                : [e-mail]
*
*   $Id: prune.php,v 1.19.2.7 2006/01/29 17:31:16 grahamje Exp $
*
*
***************************************************************************/

/***************************************************************************
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 ***************************************************************************/

if ( !defined('IN_PHPBB') )
{
   die("Hacking attempt");
}

require($phpbb_root_path . 'includes/functions_search.'.$phpEx);

function prune($forum_id, $prune_date, $prune_all = false)
{
    global $db, $lang;

    // Before pruning, lets try to clean up the invalid topic entries
    $sql = 'SELECT topic_id FROM ' . TOPICS_TABLE . '
        WHERE topic_last_post_id = 0';
    if ( !($result = $db->sql_query($sql)) )
    {
        message_die(GENERAL_ERROR, 'Could not obtain lists of topics to sync', '', __LINE__, __FILE__, $sql);
    }

    while( $row = $db->sql_fetchrow($result) )
    {
        sync('topic', $row['topic_id']);
    }

    $db->sql_freeresult($result);

    $prune_all = ($prune_all) ? '' : 'AND t.topic_vote = 0 AND t.topic_type <> ' . POST_ANNOUNCE;
    //
    // Those without polls and announcements ... unless told otherwise!
    //
    $sql = "SELECT t.topic_id
        FROM " . POSTS_TABLE . " p, " . TOPICS_TABLE . " t
        WHERE t.forum_id = $forum_id
            $prune_all
            AND p.post_id = t.topic_last_post_id";
    if ( $prune_date != '' )
    {
        $sql .= " AND p.post_time < $prune_date";
    }

    if ( !($result = $db->sql_query($sql)) )
    {
        message_die(GENERAL_ERROR, 'Could not obtain lists of topics to prune', '', __LINE__, __FILE__, $sql);
    }

    $sql_topics = '';
    while( $row = $db->sql_fetchrow($result) )
    {
        $sql_topics .= ( ( $sql_topics != '' ) ? ', ' : '' ) . $row['topic_id'];
    }
    $db->sql_freeresult($result);

    if( $sql_topics != '' )
    {
        $sql = "SELECT post_id
            FROM " . POSTS_TABLE . "
            WHERE forum_id = $forum_id
                AND topic_id IN ($sql_topics)";
        if ( !($result = $db->sql_query($sql)) )
        {
            message_die(GENERAL_ERROR, 'Could not obtain list of posts to prune', '', __LINE__, __FILE__, $sql);
        }

        $sql_post = '';
        while ( $row = $db->sql_fetchrow($result) )
        {
            $sql_post .= ( ( $sql_post != '' ) ? ', ' : '' ) . $row['post_id'];
        }
        $db->sql_freeresult($result);

        if ( $sql_post != '' )
        {
            $sql = "DELETE FROM " . TOPICS_WATCH_TABLE . "
                WHERE topic_id IN ($sql_topics)";
            if ( !$db->sql_query($sql, BEGIN_TRANSACTION) )
            {
                message_die(GENERAL_ERROR, 'Could not delete watched topics during prune', '', __LINE__, __FILE__, $sql);
            }

            $sql = "DELETE FROM " . TOPICS_TABLE . "
                WHERE topic_id IN ($sql_topics)";
            if ( !$db->sql_query($sql) )
            {
                message_die(GENERAL_ERROR, 'Could not delete topics during prune', '', __LINE__, __FILE__, $sql);
            }

            $pruned_topics = $db->sql_affectedrows();

            $sql = "DELETE FROM " . POSTS_TABLE . "
                WHERE post_id IN ($sql_post)";
            if ( !$db->sql_query($sql) )
            {
                message_die(GENERAL_ERROR, 'Could not delete post_text during prune', '', __LINE__, __FILE__, $sql);
            }

            $pruned_posts = $db->sql_affectedrows();

            $sql = "DELETE FROM " . POSTS_TEXT_TABLE . "
                WHERE post_id IN ($sql_post)";
            if ( !$db->sql_query($sql) )
            {
                message_die(GENERAL_ERROR, 'Could not delete post during prune', '', __LINE__, __FILE__, $sql);
            }

            remove_search_post($sql_post);

            return array ('topics' => $pruned_topics, 'posts' => $pruned_posts);
        }
    }

    return array('topics' => 0, 'posts' => 0);
}

//
// Function auto_prune(), this function will read the configuration data from
// the auto_prune table and call the prune function with the necessary info.
//
function auto_prune($forum_id = 0)
{
    global $db, $lang;

    $sql = "SELECT *
        FROM " . PRUNE_TABLE . "
        WHERE forum_id = $forum_id";
    if ( !($result = $db->sql_query($sql)) )
    {
        message_die(GENERAL_ERROR, 'Could not read auto_prune table', '', __LINE__, __FILE__, $sql);
    }

    if ( $row = $db->sql_fetchrow($result) )
    {
        if ( $row['prune_freq'] && $row['prune_days'] )
        {
            $prune_date = time() - ( $row['prune_days'] * 86400 );
            $next_prune = time() + ( $row['prune_freq'] * 86400 );

            prune($forum_id, $prune_date);
            sync('forum', $forum_id);

            $sql = "UPDATE " . FORUMS_TABLE . "
                SET prune_next = $next_prune
                WHERE forum_id = $forum_id";
            if ( !$db->sql_query($sql) )
            {
                message_die(GENERAL_ERROR, 'Could not update forum table', '', __LINE__, __FILE__, $sql);
            }
        }
    }

    return;
}

?>