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https://github.com/phpbb/phpbb.git
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481 lines
13 KiB
PHP
481 lines
13 KiB
PHP
<?php
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/***************************************************************************
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* search.php
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* -------------------
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* begin : Wed Sep 05 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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* 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 clean_words($mode, &$entry, &$stopword_list, &$synonym_list)
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{
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// Weird, $init_match doesn't work with static when double quotes (") are used...
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static $drop_char_match = array('^', '$', '&', '(', ')', '<', '>', '`', "'", '|', ',', '@', '_', '?', '%', '-', '~', '+', '.', '[', ']', '{', '}', ':', '\\', '/', '=', '#', '\'', ';', '!');
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static $drop_char_replace = array(" ", " ", " ", " ", " ", " ", " ", " ", "", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " " , " ", " ", " ", " ", " ", " ");
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// 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");
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// static $accent_replace = array("s", "a", "a", "a", "a", "a", "a", "a", "c", "e", "e", "e", "e", "i", "i", "i", "i", "o", "n", "o", "o", "o", "o", "o", "o", "u", "u", "u", "u", "y", "t", "y");
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$entry = " " . strip_tags(strtolower($entry)) . " ";
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for($i = 0; $i < count($accent_match); $i++)
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{
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$entry = str_replace($accent_match[$i], $accent_replace[$i], $entry);
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}
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if( $mode == "post" )
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{
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// Replace line endings by a space
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$entry = preg_replace("/[\n\r]/is", " ", $entry);
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// HTML entities like
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$entry = preg_replace("/\b&[a-z]+;\b/", " ", $entry);
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// Remove URL's
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$entry = preg_replace("/\b[a-z0-9]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/]+)?/", " ", $entry);
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// Quickly remove BBcode.
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$entry = preg_replace("/\[img:[a-z0-9]{10,}\].*?\[\/img:[a-z0-9]{10,}\]/", " ", $entry);
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$entry = preg_replace("/\[\/?url(=.*?)?\]/", " ", $entry);
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$entry = preg_replace("/\[\/?[a-z\*=\+\-]+(\:?[0-9a-z]+)?:[a-z0-9]{10,}(\:[a-z0-9]+)?=?.*?\]/", " ", $entry);
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}
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else if( $mode == "search" )
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{
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$entry = str_replace("+", " and ", $entry);
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$entry = str_replace("-", " not ", $entry);
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}
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// Replace numbers on their own
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$entry = preg_replace("/\b[0-9]+\b/", " ", $entry);
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//
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// Filter out strange characters like ^, $, &, change "it's" to "its"
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//
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for($i = 0; $i < count($drop_char_match); $i++)
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{
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$entry = str_replace($drop_char_match[$i], $drop_char_replace[$i], $entry);
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}
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if( $mode == "post" )
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{
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$entry = str_replace("*", " ", $entry);
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// 'words' that consist of <=3 or >=25 characters are removed.
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$entry = preg_replace("/\b([a-z0-9]{1,3}|[a-z0-9]{25,})\b/", " ", $entry);
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}
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if( !empty($stopword_list) )
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{
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for ($j = 0; $j < count($stopword_list); $j++)
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{
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$stopword = trim($stopword_list[$j]);
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if ( $mode == "post" || ( $stopword != "not" && $stopword != "and" && $stopword != "or" ) )
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{
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$entry = preg_replace("/\b" . $stopword . "\b/", " ", $entry);
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}
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}
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}
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if( !empty($synonym_list) )
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{
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for ($j = 0; $j < count($synonym_list); $j++)
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{
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list($replace_synonym, $match_synonym) = split(" ", trim(strtolower($synonym_list[$j])));
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if ( $mode == "post" || ( $match_synonym != "not" && $match_synonym != "and" && $match_synonym != "or" ) )
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{
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$entry = preg_replace("/\b" . trim($match_synonym) . "\b/", " " . trim($replace_synonym) . " ", $entry);
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}
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}
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}
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return $entry;
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}
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function split_words(&$entry, $mode = "post")
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{
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if( $mode == "post" )
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{
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preg_match_all("/\b(\w[\w']*\w+|\w+?)\b/", $entry, $split_entries);
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}
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else
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{
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preg_match_all("/(\*?[a-z0-9]+\*?)|\b([a-z0-9]+)\b/", $entry, $split_entries);
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}
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return $split_entries[1];
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}
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function add_search_words($post_id, $post_text, $post_title = "")
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{
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global $db, $phpbb_root_path, $board_config, $lang;
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$stopwords_array = @file($phpbb_root_path . "language/lang_" . $board_config['default_lang'] . "/search_stopwords.txt");
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$synonym_array = @file($phpbb_root_path . "language/lang_" . $board_config['default_lang'] . "/search_synonyms.txt");
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$search_raw_words = array();
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$search_raw_words['text'] = split_words(clean_words('post', $post_text, $stopword_array, $synonym_array));
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$search_raw_words['title'] = split_words(clean_words('post', $post_title, $stopword_array, $synonym_array));
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$word = array();
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$word_insert_sql = array();
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while( list($word_in, $search_matches) = @each($search_raw_words) )
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{
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$word_insert_sql[$word_in] = "";
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if( !empty($search_matches) )
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{
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for ($i = 0; $i < count($search_matches); $i++)
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{
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$search_matches[$i] = trim($search_matches[$i]);
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if( $search_matches[$i] != "" )
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{
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$word[] = $search_matches[$i];
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if ( !strstr($word_insert_sql[$word_in], "'" . $search_matches[$i] . "'") )
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{
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$word_insert_sql[$word_in] .= ( $word_insert_sql[$word_in] != "" ) ? ", '" . $search_matches[$i] . "'" : "'" . $search_matches[$i] . "'";
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}
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}
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}
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}
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}
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if( count($word) )
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{
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sort($word);
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$prev_word = "";
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$word_text_sql = "";
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$temp_word = array();
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for($i = 0; $i < count($word); $i++)
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{
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if ( $word[$i] != $prev_word )
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{
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$temp_word[] = $word[$i];
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$word_text_sql .= ( ( $word_text_sql != "" ) ? ", " : "" ) . "'" . $word[$i] . "'";
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}
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$prev_word = $word[$i];
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}
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$word = $temp_word;
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$check_words = array();
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switch( SQL_LAYER )
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{
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case 'postgresql':
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case 'msaccess':
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case 'oracle':
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case 'db2':
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$sql = "SELECT word_id, word_text
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FROM " . SEARCH_WORD_TABLE . "
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WHERE word_text IN ($word_text_sql)";
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't select words", "", __LINE__, __FILE__, $sql);
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}
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while( $row = $db->sql_fetchrow($result) )
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{
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$check_words[$row['word_text']] = $row['word_id'];
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}
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break;
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}
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$value_sql = "";
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$match_word = array();
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for ($i = 0; $i < count($word); $i++)
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{
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$new_match = true;
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if( isset($check_words[$word[$i]]) )
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{
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$new_match = false;
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}
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if( $new_match )
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{
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switch( SQL_LAYER )
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{
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case 'mysql':
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case 'mysql4':
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$value_sql .= ( ( $value_sql != "" ) ? ", " : "" ) . "('" . $word[$i] . "')";
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break;
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case 'mssql':
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case 'mssql-odbc':
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$value_sql .= ( ( $value_sql != "" ) ? " UNION ALL " : "" ) . "SELECT '" . $word[$i] . "'";
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break;
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default:
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$sql = "INSERT INTO " . SEARCH_WORD_TABLE . " (word_text)
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VALUES ('" . $word[$i] . "')";
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't insert new word", "", __LINE__, __FILE__, $sql);
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}
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break;
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}
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}
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}
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if ( $value_sql != "" )
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{
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switch ( SQL_LAYER )
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{
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case 'mysql':
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case 'mysql4':
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$sql = "INSERT IGNORE INTO " . SEARCH_WORD_TABLE . " (word_text)
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VALUES $value_sql";
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break;
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case 'mssql':
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case 'mssql-odbc':
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$sql = "INSERT INTO " . SEARCH_WORD_TABLE . " (word_text)
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$value_sql";
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break;
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}
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't insert new word", "", __LINE__, __FILE__, $sql);
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}
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}
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}
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while( list($word_in, $match_sql) = @each($word_insert_sql) )
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{
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$title_match = ( $word_in == 'title' ) ? 1 : 0;
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if ( $match_sql != "" )
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{
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$sql = "INSERT INTO " . SEARCH_MATCH_TABLE . " (post_id, word_id, title_match)
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SELECT $post_id, word_id, $title_match
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FROM " . SEARCH_WORD_TABLE . "
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WHERE word_text IN ($match_sql)";
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't insert new word matches", "", __LINE__, __FILE__, $sql);
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}
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}
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}
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if ( $mode == 'single' )
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{
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remove_common('single', 0.4, $word);
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}
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return;
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}
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//
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// Check if specified words are too common now
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//
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function remove_common($mode, $fraction, $word_id_list = array())
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{
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global $db;
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$sql = ( $mode == "global" ) ? "SELECT COUNT(DISTINCT post_id) AS total_posts FROM " . SEARCH_MATCH_TABLE : "SELECT SUM(forum_posts) AS total_posts FROM " . FORUMS_TABLE;
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't obtain post count", "", __LINE__, __FILE__, $sql);
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}
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$row = $db->sql_fetchrow($result);
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if( $row['total_posts'] >= 100 )
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{
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$common_threshold = floor($row['total_posts'] * $fraction);
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if( $mode == "single" && count($word_id_list) )
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{
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$word_id_sql = "";
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for($i = 0; $i < count($word_id_list); $i++)
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{
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$word_id_sql .= ( ( $word_id_sql != "" ) ? ", " : "" ) . "'" . $word_id_list[$i] . "'";
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}
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$sql = "SELECT m.word_id
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FROM " . SEARCH_MATCH_TABLE . " m, " . SEARCH_WORD_TABLE . " w
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WHERE w.word_text IN ($word_id_sql)
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AND m.word_id = w.word_id
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GROUP BY m.word_id
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HAVING COUNT(m.word_id) > $common_threshold";
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}
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else
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{
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$sql = "SELECT word_id
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FROM " . SEARCH_MATCH_TABLE . "
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GROUP BY word_id
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HAVING COUNT(word_id) > $common_threshold";
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}
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't obtain common word list", "", __LINE__, __FILE__, $sql);
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}
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$common_word_id = "";
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while( $row = $db->sql_fetchrow($result) )
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{
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$common_word_id .= ( $common_word_id != "" ) ? ", " . $row['word_id'] : $row['word_id'];
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}
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$db->sql_freeresult($result);
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if( $common_word_id != "" )
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{
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$sql = "UPDATE " . SEARCH_WORD_TABLE . "
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SET word_common = " . TRUE . "
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WHERE word_id IN ($common_word_id)";
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't delete word list entry", "", __LINE__, __FILE__, $sql);
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}
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$sql = "DELETE FROM " . SEARCH_MATCH_TABLE . "
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WHERE word_id IN ($common_word_id)";
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if( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't delete word match entry", "", __LINE__, __FILE__, $sql);
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}
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}
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}
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return $word_count;
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}
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function remove_unmatched_words()
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{
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global $db;
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switch(SQL_LAYER)
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{
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case 'mysql':
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case 'mysql4':
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$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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$word_id_sql = "";
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while( $row = $db->sql_fetchrow($result) )
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{
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$word_id_sql .= ( $word_id_sql != "" ) ? ", " . $row['word_id'] : $row['word_id'];
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}
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if( $word_id_sql != "" )
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{
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$sql = "DELETE FROM " . SEARCH_WORD_TABLE . "
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WHERE word_id IN ($word_id_sql)";
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if( !($result = $db->sql_query($sql, END_TRANSACTION)) )
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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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return $db->sql_affectedrows();
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}
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}
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break;
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default:
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$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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if( !($result = $db->sql_query($sql, END_TRANSACTION)) )
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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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return $db->sql_affectedrows();
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break;
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}
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return 0;
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}
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//
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// Username search
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//
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function username_search($search_match, $is_inline_review = 0, $default_list = "")
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{
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global $db, $board_config, $template, $lang, $images, $theme, $phpEx, $phpbb_root_path;
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global $starttime;
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$author_list = '';
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if ( !empty($search_match) )
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{
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$username_search = preg_replace("/\*/", "%", trim(strip_tags($search_match)));
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$sql = "SELECT username
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FROM " . USERS_TABLE . "
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WHERE username LIKE '" . str_replace("\'", "''", $username_search) . "'
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ORDER BY username";
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if ( !($result = $db->sql_query($sql)) )
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{
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message_die(GENERAL_ERROR, "Couldn't obtain search results", "", __LINE__, __FILE__, $sql);
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}
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if ( $row = $db->sql_fetchrow($result) )
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{
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do
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{
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$author_list .= '<option value="' . $row['username'] . '">' .$row['username'] . '</option>';
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}
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while ( $row = $db->sql_fetchrow($result) );
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}
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else
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{
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$author_list = '<option>' . $lang['No_match']. '</option>';
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}
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}
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if ( !$is_inline_review )
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{
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$gen_simple_header = TRUE;
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$page_title = $lang['Search'];
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include($phpbb_root_path . 'includes/page_header.'.$phpEx);
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$template->set_filenames(array(
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"search_user_body" => "search_username.tpl")
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);
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$template->assign_vars(array(
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"L_CLOSE_WINDOW" => $lang['Close_window'],
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"L_SEARCH_USERNAME" => $lang['Find_username'],
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"L_UPDATE_USERNAME" => $lang['Select_username'],
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"L_SELECT" => $lang['Select'],
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"L_SEARCH" => $lang['Search'],
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"L_SEARCH_EXPLAIN" => $lang['Search_author_explain'],
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"L_CLOSE_WINDOW" => $lang['Close_window'],
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"S_AUTHOR_OPTIONS" => $author_list,
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"S_SEARCH_ACTION" => append_sid("search.$phpEx?mode=searchuser"))
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);
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//
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// If we have results then dump them out and enable
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// the appropriate switch block
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//
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if ( !empty($author_list) )
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{
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$template->assign_block_vars("switch_select_name", array());
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}
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$template->pparse("search_user_body");
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include($phpbb_root_path . 'includes/page_tail.'.$phpEx);
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}
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return($author_list);
|
|
}
|
|
|
|
?>
|