+<?php

+/***************************************************************************

+* functions_search.php

+* -------------------

+* begin : Wed Sep 05 2001

+* copyright : (C) 2001 The phpBB Group

+* email : support@phpbb.com

+*

+* $Id$

+*

+****************************************************************************/

+

+/***************************************************************************

+ *

+ * 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.

+ *

+ ***************************************************************************/

+

+function clean_words($mode, &$entry, &$stopword_list, &$synonym_list)

+{

+ // Weird, $init_match doesn't work with static when double quotes (") are used...

+ static $drop_char_match = array('^', '$', '&', '(', ')', '<', '>', '`', "'", '|', ',', '@', '_', '?', '%', '-', '~', '+', '.', '[', ']', '{', '}', ':', '\\', '/', '=', '#', '\'', ';', '!');

+ static $drop_char_replace = array(" ", " ", " ", " ", " ", " ", " ", " ", "", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " " , " ", " ", " ", " ", " ", " ");

+

+// static $accent_match = array("ß", "à", "á", "â", "ã", "ä", "å", "æ", "ç", "è", "é", "ê", "ë", "ì", "í", "î", "ï", "ð", "ñ", "ò", "ó", "ô", "õ", "ö", "ø", "ù", "ú", "û", "ü", "ý", "þ", "ÿ");

+// static $accent_replace = array("s", "a", "a", "a", "a", "a", "a", "a", "c", "e", "e", "e", "e", "i", "i", "i", "i", "o", "n", "o", "o", "o", "o", "o", "o", "u", "u", "u", "u", "y", "t", "y");

+

+ $entry = " " . strip_tags(strtolower($entry)) . " ";

+

+ for($i = 0; $i < count($accent_match); $i++)

+ {

+ $entry = str_replace($accent_match[$i], $accent_replace[$i], $entry);

+ }

+

+ if( $mode == "post" )

+ {

+ // Replace line endings by a space

+ $entry = preg_replace("/[\n\r]/is", " ", $entry);

+ // HTML entities like &nbsp;

+ $entry = preg_replace("/\b&[a-z]+;\b/", " ", $entry);

+ // Remove URL's

+ $entry = preg_replace("/\b[a-z0-9]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/]+)?/", " ", $entry);

+ // Quickly remove BBcode.

+ $entry = preg_replace("/\[img:[a-z0-9]{10,}\].*?\[\/img:[a-z0-9]{10,}\]/", " ", $entry);

+ $entry = preg_replace("/\[\/?url(=.*?)?\]/", " ", $entry);

+ $entry = preg_replace("/\[\/?[a-z\*=\+\-]+(\:?[0-9a-z]+)?:[a-z0-9]{10,}(\:[a-z0-9]+)?=?.*?\]/", " ", $entry);

+ }

+ else if( $mode == "search" )

+ {

+ $entry = str_replace("+", " and ", $entry);

+ $entry = str_replace("-", " not ", $entry);

+ }

+

+ // Replace numbers on their own

+ $entry = preg_replace("/\b[0-9]+\b/", " ", $entry);

+

+ //

+ // Filter out strange characters like ^, $, &, change "it's" to "its"

+ //

+ for($i = 0; $i < count($drop_char_match); $i++)

+ {

+ $entry = str_replace($drop_char_match[$i], $drop_char_replace[$i], $entry);

+ }

+

+ if( $mode == "post" )

+ {

+ $entry = str_replace("*", " ", $entry);

+

+ // 'words' that consist of <=3 or >=25 characters are removed.

+ $entry = preg_replace("/\b([a-z0-9]{1,3}|[a-z0-9]{25,})\b/", " ", $entry);

+ }

+

+ if( !empty($stopword_list) )

+ {

+ for ($j = 0; $j < count($stopword_list); $j++)

+ {

+ $stopword = trim($stopword_list[$j]);

+

+ if ( $mode == "post" || ( $stopword != "not" && $stopword != "and" && $stopword != "or" ) )

+ {

+ $entry = preg_replace("/\b" . $stopword . "\b/", " ", $entry);

+ }

+ }

+ }

+

+ if( !empty($synonym_list) )

+ {

+ for ($j = 0; $j < count($synonym_list); $j++)

+ {

+ list($replace_synonym, $match_synonym) = split(" ", trim(strtolower($synonym_list[$j])));

+ if ( $mode == "post" || ( $match_synonym != "not" && $match_synonym != "and" && $match_synonym != "or" ) )

+ {

+ $entry = preg_replace("/\b" . trim($match_synonym) . "\b/", " " . trim($replace_synonym) . " ", $entry);

+ }

+ }

+ }

+

+ return $entry;

+}

+

+function split_words(&$entry, $mode = "post")

+{

+ if( $mode == "post" )

+ {

+ preg_match_all("/\b(\w[\w']*\w+|\w+?)\b/", $entry, $split_entries);

+ }

+ else

+ {

+ preg_match_all("/(\*?[a-z0-9]+\*?)|\b([a-z0-9]+)\b/", $entry, $split_entries);

+ }

+

+ return $split_entries[1];

+}

+

+function add_search_words($post_id, $post_text, $post_title = "")

+{

+ global $db, $phpbb_root_path, $board_config, $lang;

+

+ $stopwords_array = @file($phpbb_root_path . "language/lang_" . $board_config['default_lang'] . "/search_stopwords.txt");

+ $synonym_array = @file($phpbb_root_path . "language/lang_" . $board_config['default_lang'] . "/search_synonyms.txt");

+

+ $search_raw_words = array();

+ $search_raw_words['text'] = split_words(clean_words('post', $post_text, $stopword_array, $synonym_array));

+ $search_raw_words['title'] = split_words(clean_words('post', $post_title, $stopword_array, $synonym_array));

+

+ $word = array();

+ $word_insert_sql = array();

+ while( list($word_in, $search_matches) = @each($search_raw_words) )

+ {

+ $word_insert_sql[$word_in] = "";

+ if( !empty($search_matches) )

+ {

+ for ($i = 0; $i < count($search_matches); $i++)

+ {

+ $search_matches[$i] = trim($search_matches[$i]);

+

+ if( $search_matches[$i] != "" )

+ {

+ $word[] = $search_matches[$i];

+ if ( !strstr($word_insert_sql[$word_in], "'" . $search_matches[$i] . "'") )

+ {

+ $word_insert_sql[$word_in] .= ( $word_insert_sql[$word_in] != "" ) ? ", '" . $search_matches[$i] . "'" : "'" . $search_matches[$i] . "'";

+ }

+ }

+ }

+ }

+ }

+

+ if( count($word) )

+ {

+ sort($word);

+

+ $prev_word = "";

+ $word_text_sql = "";

+ $temp_word = array();

+ for($i = 0; $i < count($word); $i++)

+ {

+ if ( $word[$i] != $prev_word )

+ {

+ $temp_word[] = $word[$i];

+ $word_text_sql .= ( ( $word_text_sql != "" ) ? ", " : "" ) . "'" . $word[$i] . "'";

+ }

+ $prev_word = $word[$i];

+ }

+ $word = $temp_word;

+

+ $check_words = array();

+ switch( SQL_LAYER )

+ {

+ case 'postgresql':

+ case 'msaccess':

+ case 'mssql-odbc':

+ case 'oracle':

+ case 'db2':

+ $sql = "SELECT word_id, word_text

+ FROM " . SEARCH_WORD_TABLE . "

+ WHERE word_text IN ($word_text_sql)";

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't select words", "", __LINE__, __FILE__, $sql);

+ }

+

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

+ {

+ $check_words[$row['word_text']] = $row['word_id'];

+ }

+ break;

+ }

+

+ $value_sql = "";

+ $match_word = array();

+ for ($i = 0; $i < count($word); $i++)

+ {

+ $new_match = true;

+ if( isset($check_words[$word[$i]]) )

+ {

+ $new_match = false;

+ }

+

+ if( $new_match )

+ {

+ switch( SQL_LAYER )

+ {

+ case 'mysql':

+ case 'mysql4':

+ $value_sql .= ( ( $value_sql != "" ) ? ", " : "" ) . "('" . $word[$i] . "')";

+ break;

+ case 'mssql':

+ $value_sql .= ( ( $value_sql != "" ) ? " UNION ALL " : "" ) . "SELECT '" . $word[$i] . "'";

+ break;

+ default:

+ $sql = "INSERT INTO " . SEARCH_WORD_TABLE . " (word_text)

+ VALUES ('" . $word[$i] . "')";

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't insert new word", "", __LINE__, __FILE__, $sql);

+ }

+ break;

+ }

+ }

+ }

+

+ if ( $value_sql != "" )

+ {

+ switch ( SQL_LAYER )

+ {

+ case 'mysql':

+ case 'mysql4':

+ $sql = "INSERT IGNORE INTO " . SEARCH_WORD_TABLE . " (word_text)

+ VALUES $value_sql";

+ break;

+ case 'mssql':

+ $sql = "INSERT INTO " . SEARCH_WORD_TABLE . " (word_text)

+ $value_sql";

+ break;

+ }

+

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't insert new word", "", __LINE__, __FILE__, $sql);

+ }

+ }

+ }

+

+ while( list($word_in, $match_sql) = @each($word_insert_sql) )

+ {

+ $title_match = ( $word_in == 'title' ) ? 1 : 0;

+

+ if ( $match_sql != "" )

+ {

+ $sql = "INSERT INTO " . SEARCH_MATCH_TABLE . " (post_id, word_id, title_match)

+ SELECT $post_id, word_id, $title_match

+ FROM " . SEARCH_WORD_TABLE . "

+ WHERE word_text IN ($match_sql)";

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't insert new word matches", "", __LINE__, __FILE__, $sql);

+ }

+ }

+ }

+

+ if ( $mode == 'single' )

+ {

+ remove_common('single', 0.4, $word);

+ }

+

+ return;

+}

+

+//

+// Check if specified words are too common now

+//

+function remove_common($mode, $fraction, $word_id_list = array())

+{

+ global $db;

+

+ $sql = ( $mode == "global" ) ? "SELECT COUNT(post_id) AS total_posts FROM " . SEARCH_MATCH_TABLE . " GROUP BY post_id" : "SELECT SUM(forum_posts) AS total_posts FROM " . FORUMS_TABLE;

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't obtain post count", "", __LINE__, __FILE__, $sql);

+ }

+

+ $row = $db->sql_fetchrow($result);

+

+ if( $row['total_posts'] >= 100 )

+ {

+ $common_threshold = floor($row['total_posts'] * $fraction);

+

+ if( $mode == "single" && count($word_id_list) )

+ {

+ $word_id_sql = "";

+ for($i = 0; $i < count($word_id_list); $i++)

+ {

+ $word_id_sql .= ( ( $word_id_sql != "" ) ? ", " : "" ) . "'" . $word_id_list[$i] . "'";

+ }

+

+ $sql = "SELECT m.word_id

+ FROM " . SEARCH_MATCH_TABLE . " m, " . SEARCH_WORD_TABLE . " w

+ WHERE w.word_text IN ($word_id_sql)

+ AND m.word_id = w.word_id

+ GROUP BY m.word_id

+ HAVING COUNT(m.word_id) > $common_threshold";

+ }

+ else

+ {

+ $sql = "SELECT word_id

+ FROM " . SEARCH_MATCH_TABLE . "

+ GROUP BY word_id

+ HAVING COUNT(word_id) > $common_threshold";

+ }

+

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't obtain common word list", "", __LINE__, __FILE__, $sql);

+ }

+

+ $common_word_id = "";

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

+ {

+ $common_word_id .= ( $common_word_id != "" ) ? ", " . $row['word_id'] : $row['word_id'];

+ }

+

+ $db->sql_freeresult($result);

+

+ if( $common_word_id != "" )

+ {

+ $sql = "UPDATE " . SEARCH_WORD_TABLE . "

+ SET word_common = " . TRUE . "

+ WHERE word_id IN ($common_word_id)";

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't delete word list entry", "", __LINE__, __FILE__, $sql);

+ }

+

+ $sql = "DELETE FROM " . SEARCH_MATCH_TABLE . "

+ WHERE word_id IN ($common_word_id)";

+ if( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't delete word match entry", "", __LINE__, __FILE__, $sql);

+ }

+ }

+ }

+

+ return $word_count;

+}

+

+function remove_unmatched_words()

+{

+ global $db;

+

+ switch(SQL_LAYER)

+ {

+ case 'mysql':

+ case 'mysql4':

+ $sql = "SELECT w.word_id

+ FROM " . SEARCH_WORD_TABLE . " w

+ LEFT JOIN " . SEARCH_MATCH_TABLE . " m ON m.word_id = w.word_id

+ WHERE m.word_id IS NULL";

+ if( $result = $db->sql_query($sql) )

+ {

+ $word_id_sql = "";

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

+ {

+ $word_id_sql .= ( $word_id_sql != "" ) ? ", " . $row['word_id'] : $row['word_id'];

+ }

+

+ if( $word_id_sql != "" )

+ {

+ $sql = "DELETE FROM " . SEARCH_WORD_TABLE . "

+ WHERE word_id IN ($word_id_sql)";

+ if( !($result = $db->sql_query($sql, END_TRANSACTION)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't delete word list entry", "", __LINE__, __FILE__, $sql);

+ }

+

+ return $db->sql_affectedrows();

+ }

+ }

+ break;

+

+ default:

+ $sql = "DELETE FROM " . SEARCH_WORD_TABLE . "

+ WHERE word_id NOT IN (

+ SELECT word_id

+ FROM " . SEARCH_MATCH_TABLE . "

+ GROUP BY word_id)";

+ if( !($result = $db->sql_query($sql, END_TRANSACTION)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't delete old words from word table", __LINE__, __FILE__, $sql);

+ }

+

+ return $db->sql_affectedrows();

+

+ break;

+ }

+

+ return 0;

+}

+

+//

+// Username search

+//

+function username_search($search_match, $is_inline_review = 0, $default_list = "")

+{

+ global $db, $board_config, $template, $lang, $images, $theme, $phpEx, $phpbb_root_path;

+ global $starttime;

+

+ $author_list = '';

+ if ( !empty($search_match) )

+ {

+ $username_search = preg_replace("/\*/", "%", trim(strip_tags($search_match)));

+

+ $sql = "SELECT username

+ FROM " . USERS_TABLE . "

+ WHERE username LIKE '" . str_replace("\'", "''", $username_search) . "'

+ ORDER BY username";

+ if ( !($result = $db->sql_query($sql)) )

+ {

+ message_die(GENERAL_ERROR, "Couldn't obtain search results", "", __LINE__, __FILE__, $sql);

+ }

+

+ if ( $row = $db->sql_fetchrow($result) )

+ {

+ do

+ {

+ $author_list .= '<option value="' . $row['username'] . '">' .$row['username'] . '</option>';

+ }

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

+ }

+ else

+ {

+ $author_list = '<option>' . $lang['No_match']. '</option>';

+ }

+

+ }

+

+ if ( !$is_inline_review )

+ {

+ $gen_simple_header = TRUE;

+ $page_title = $lang['Search'];

+ include($phpbb_root_path . 'includes/page_header.'.$phpEx);

+

+ $template->set_filenames(array(

+ "search_user_body" => "search_username.tpl")

+ );

+

+ $template->assign_vars(array(

+ "L_CLOSE_WINDOW" => $lang['Close_window'],

+ "L_SEARCH_USERNAME" => $lang['Find_username'],

+ "L_UPDATE_USERNAME" => $lang['Select_username'],

+ "L_SELECT" => $lang['Select'],

+ "L_SEARCH" => $lang['Search'],

+ "L_SEARCH_EXPLAIN" => $lang['Search_author_explain'],

+ "L_CLOSE_WINDOW" => $lang['Close_window'],

+

+ "S_AUTHOR_OPTIONS" => $author_list,

+ "S_SEARCH_ACTION" => append_sid("search.$phpEx?mode=searchuser"))

+ );

+

+ //

+ // If we have results then dump them out and enable

+ // the appropriate switch block

+ //

+ if ( !empty($author_list) )

+ {

+ $template->assign_block_vars("switch_select_name", array());

+ }

+

+ $template->pparse("search_user_body");

+

+ include($phpbb_root_path . 'includes/page_tail.'.$phpEx);

+ }

+

+ return($author_list);

+}

+

+?> \ No newline at end of file