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266 lines
7.0 KiB
PHP
266 lines
7.0 KiB
PHP
<?php
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/***************************************************************************
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* prune.php
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* -------------------
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* begin : Thursday, June 14, 2001
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* copyright : (C) 2001 The phpBB Group
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* email : support@phpbb.com
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*
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* $Id$
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*
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*
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***************************************************************************/
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/***************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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***************************************************************************/
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function prune($forum_id, $prune_date)
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{
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global $db, $lang;
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$pruned_topic_list = array();
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//
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// Those without polls ...
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//
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$sql = "SELECT t.topic_id
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FROM " . POSTS_TABLE . " p, " . TOPICS_TABLE . " t
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WHERE t.forum_id = $forum_id
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AND t.topic_vote = 0
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AND t.topic_type <> " . POST_ANNOUNCE . "
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AND p.post_id = t.topic_last_post_id";
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if ($prune_date != "")
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{
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$sql .= " AND p.post_time < $prune_date";
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}
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if(!$result_topics = $db->sql_query($sql))
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{
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message_die(GENERAL_ERROR, "Couldn't obtain lists of topics to prune.", "", __LINE__, __FILE__, $sql);
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}
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if( $pruned_topics = $db->sql_numrows($result_topics) )
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{
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$pruned_topic_list = $db->sql_fetchrowset($result_topics);
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$sql_topics = "";
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for($i = 0; $i < $pruned_topics; $i++)
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{
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if($sql_topics != "")
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{
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$sql_topics .= ", ";
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}
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$sql_topics .= $pruned_topic_list[$i]['topic_id'];
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}
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$sql_topics = "topic_id IN (" . $sql_topics . ")";
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$sql = "SELECT post_id
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FROM " . POSTS_TABLE . "
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WHERE forum_id = $forum_id
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AND $sql_topics";
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if(!$result_posts = $db->sql_query($sql))
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{
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message_die(GENERAL_ERROR, "Couldn't obtain list of posts to prune.", "", __LINE__, __FILE__, $sql);
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}
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$pruned_posts = $db->sql_numrows($result_posts);
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$pruned_post_list = $db->sql_fetchrowset($result_posts);
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$sql_post = "";
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for($i = 0; $i < $pruned_posts; $i++)
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{
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$post_id = $pruned_post_list[$i]['post_id'];
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if( $sql_post != "" )
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{
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$sql_post .= ", ";
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}
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$sql_post .= $post_id;
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}
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$sql_post = "post_id IN (" . $sql_post . ")";
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$sql = "DELETE FROM " . TOPICS_TABLE . "
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WHERE $sql_topics";
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if(!$result = $db->sql_query($sql))
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{
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message_die(GENERAL_ERROR, "Couldn't delete topics during prune.", "", __LINE__, __FILE__, $sql);
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}
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$sql = "DELETE FROM " . POSTS_TABLE . "
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WHERE $sql_post";
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if( $result = $db->sql_query($sql, BEGIN_TRANSACTION) )
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{
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$sql = "DELETE FROM " . POSTS_TEXT_TABLE . "
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WHERE $sql_post";
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if( $result = $db->sql_query($sql) )
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{
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$sql = "DELETE FROM " . SEARCH_MATCH_TABLE . "
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WHERE $sql_post";
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if( !$result = $db->sql_query($sql, END_TRANSACTION) )
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{
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message_die(GENERAL_ERROR, "Couldn't delete search matches", "", __LINE__, __FILE__, $sql);
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}
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}
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else
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{
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message_die(GENERAL_ERROR, "Couldn't delete post during prune.", "", __LINE__, __FILE__, $sql);
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}
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}
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else
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{
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message_die(GENERAL_ERROR, "Couldn't delete post_text during prune.", "", __LINE__, __FILE__, $sql);
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}
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//
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// Remove any words in search wordlist which no longer
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// appear in posts
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//
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switch(SQL_LAYER)
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{
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case 'postgresql':
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$sql = "DELETE FROM " . SEARCH_WORD_TABLE . "
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WHERE word_id NOT IN (
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SELECT word_id
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FROM " . SEARCH_MATCH_TABLE . "
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GROUP BY word_id)";
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$result = $db->sql_query($sql);
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if( !$result )
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{
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message_die(GENERAL_ERROR, "Couldn't delete old words from word table", __LINE__, __FILE__, $sql);
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}
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break;
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case 'oracle':
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$sql = "DELETE FROM " . SEARCH_WORD_TABLE . "
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WHERE word_id IN (
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SELECT w.word_id
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FROM " . SEARCH_WORD_TABLE . " w, " . SEARCH_MATCH_TABLE . " m
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WHERE w.word_id = m.word_id(+)
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AND m.word_id IS NULL)";
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$result = $db->sql_query($sql);
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if( !$result )
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{
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message_die(GENERAL_ERROR, "Couldn't delete old words from word table", __LINE__, __FILE__, $sql);
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}
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break;
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case 'mssql':
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case 'msaccess':
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$sql = "DELETE FROM " . SEARCH_WORD_TABLE . "
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WHERE word_id IN (
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SELECT w.word_id
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FROM " . SEARCH_WORD_TABLE . " w
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LEFT JOIN " . SEARCH_MATCH_TABLE . " m ON m.word_id = w.word_id
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WHERE m.word_id IS NULL)";
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$result = $db->sql_query($sql);
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if( !$result )
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{
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message_die(GENERAL_ERROR, "Couldn't delete old words from word table", __LINE__, __FILE__, $sql);
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}
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break;
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case 'mysql':
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case 'mysql4':
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// 0.07s
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$sql = "SELECT w.word_id
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FROM " . SEARCH_WORD_TABLE . " w
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LEFT JOIN " . SEARCH_MATCH_TABLE . " m ON m.word_id = w.word_id
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WHERE m.word_id IS NULL";
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if( $result = $db->sql_query($sql) )
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{
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if( $db->sql_numrows($result) )
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{
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$rowset = array();
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while( $row = $db->sql_fetchrow($result) )
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{
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$rowset[] = $row['word_id'];
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}
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$word_id_sql = implode(", ", $rowset);
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if( $word_id_sql )
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{
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// 0.07s (about 15-20 words)
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$sql = "DELETE FROM " . SEARCH_WORD_TABLE . "
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WHERE word_id IN ($word_id_sql)";
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$result = $db->sql_query($sql);
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if( !$result )
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{
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message_die(GENERAL_ERROR, "Couldn't delete word list entry", "", __LINE__, __FILE__, $sql);
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}
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}
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}
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}
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break;
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}
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$sql = "UPDATE " . FORUMS_TABLE . "
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SET forum_topics = forum_topics - $pruned_topics, forum_posts = forum_posts - $pruned_posts
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WHERE forum_id = $forum_id";
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if(!$result = $db->sql_query($sql))
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{
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message_die(GENERAL_ERROR, "Couldn't update forum data after prune.", "", __LINE__, __FILE__, $sql);
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}
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return array (
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"topics" => $pruned_topics,
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"posts" => $pruned_posts);
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}
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else
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{
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return array(
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"topics" => 0,
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"posts" => 0);
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}
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}
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/***************************************************************************\
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*
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* Function auto_prune(), this function will read the configuration data from
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* the auto_prune table and call the prune function with the necessary info.
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*
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****************************************************************************/
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function auto_prune($forum_id = 0)
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{
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global $db, $lang;
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$sql = "SELECT *
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FROM " . PRUNE_TABLE . "
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WHERE forum_id = $forum_id";
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if(!$result = $db->sql_query($sql))
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{
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message_die(GENERAL_ERROR, "Auto-Prune: Couldn't read auto_prune table.", __LINE__, __FILE__);
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}
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if( $db->sql_numrows($result) )
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{
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$row = $db->sql_fetchrow($result);
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if( $row['prune_freq'] && $row['prune_days'] )
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{
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$prune_date = time() - ( $row['prune_days'] * 86400 );
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prune($forum_id, $prune_date);
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$next_prune = time() + ( $row['prune_freq'] * 86400 );
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$sql = "UPDATE " . FORUMS_TABLE . "
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SET prune_next = $next_prune
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WHERE forum_id = $forum_id";
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if( !$db->sql_query($sql) )
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{
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message_die(GENERAL_ERROR, "Auto-Prune: Couldn't update forum table.", __LINE__, __FILE__);
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}
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}
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}
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return;
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}
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?>
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