mirror of
https://github.com/phpbb/phpbb.git
synced 2025-02-23 11:28:33 +01:00
311 lines
8.8 KiB
PHP
311 lines
8.8 KiB
PHP
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<?php
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// -------------------------------------------------------------
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//
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// $Id$
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//
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// FILENAME : fulltext.php
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// STARTED : Fri Nov 19, 2004
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// COPYRIGHT : <20> 2004 phpBB Group
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// WWW : http://www.phpbb.com/
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// LICENCE : GPL vs2.0 [ see /docs/COPYING ]
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//
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// -------------------------------------------------------------
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class fulltext_phpbb
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{
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function fulltext_phpbb(&$error)
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{
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$error = false;
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}
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function search($type, &$fields, &$fid_ary, &$keywords, &$author, &$pid_ary)
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{
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// $type, &$keywords, &$sql_author, &$sql_forums, &$search_fields, &$pid_ary, &$sql_in)
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global $phpbb_root_path, $phpEx, $config, $db, $user, $SID;
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// Are we looking for words
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if ($keywords)
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{
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// TODO
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$sql_author = ($sql_author) ? ' AND ' . $sql_author : '';
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$split_words = $stopped_words = $smllrg_words = array();
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$drop_char_match = array('-', '^', '$', ';', '#', '&', '(', ')', '<', '>', '`', '\'', '"', '|', ',', '@', '_', '?', '%', '~', '.', '[', ']', '{', '}', ':', '\\', '/', '=', '\'', '!', '*');
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$drop_char_replace = array(' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '', '', ' ', ' ', ' ', ' ', '', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '' , ' ', ' ', ' ', ' ', ' ');
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if ($fp = @fopen($user->lang_path . '/search_stopwords.txt', 'rb'))
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{
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$stopwords = explode("\n", str_replace("\r\n", "\n", fread($fp, filesize($user->lang_path . '/search_stopwords.txt'))));
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}
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fclose($fp);
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if ($fp = @fopen($user->lang_path . '/search_synonyms.txt', 'rb'))
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{
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preg_match_all('#^(.*?) (.*?)$#ms', fread($fp, filesize($user->lang_path . '/search_synonyms.txt')), $match);
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$replace_synonym = &$match[1];
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$match_synonym = &$match[2];
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}
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fclose($fp);
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$match = array('#\sand\s#i', '#\sor\s#i', '#\snot\s#i', '#\+#', '#-#', '#\|#');
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$replace = array(' + ', ' | ', ' - ', ' + ', ' - ', ' | ');
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$keywords = preg_replace($match, $replace, $keywords);
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$match = array();
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// Comments for hardcoded bbcode elements (urls, smilies, html)
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$match[] = '#<!\-\- .* \-\->(.*?)<!\-\- .* \-\->#is';
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// New lines, carriage returns
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$match[] = "#[\n\r]+#";
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// NCRs like etc.
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$match[] = '#(&|&)[\#a-z0-9]+?;#i';
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// BBcode
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$match[] = '#\[\/?[a-z\*\+\-]+(=.*)?(\:?[0-9a-z]{5,})\]#';
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// Filter out as above
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$keywords = preg_replace($match, ' ', strtolower(trim($keywords)));
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$keywords = str_replace($drop_char_match, $drop_char_replace, $keywords);
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// Split words
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$split_words = explode(' ', preg_replace('#\s+#', ' ', $keywords));
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if (sizeof($stopwords))
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{
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$stopped_words = array_intersect($split_words, $stopwords);
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$split_words = array_diff($split_words, $stopwords);
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}
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if (sizeof($replace_synonym))
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{
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$split_words = str_replace($replace_synonym, $match_synonym, $split_words);
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}
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}
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if (isset($old_split_words) && sizeof($old_split_words))
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{
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$split_words = (sizeof($split_words)) ? array_diff($split_words, $old_split_words) : $old_split_words;
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}
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if (sizeof($split_words))
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{
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$bool = ($search_terms == 'all') ? 'AND' : 'OR';
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$sql_words = '';
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foreach ($split_words as $word)
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{
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switch ($word)
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{
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case '-':
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$bool = 'NOT';
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continue;
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case '+':
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$bool = 'AND';
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continue;
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case '|':
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$bool = 'OR';
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continue;
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default:
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$bool = ($search_terms != 'all') ? 'OR' : $bool;
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$sql_words[$bool][] = "'" . preg_replace('#\*+#', '%', trim($word)) . "'";
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$bool = ($search_terms == 'all') ? 'AND' : 'OR';
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}
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}
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switch ($search_fields)
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{
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case 'titleonly':
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$sql_match = ' AND m.title_match = 1';
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break;
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case 'msgonly':
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$sql_match = ' AND m.title_match = 0';
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break;
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default:
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$sql_match = '';
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}
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// Build some display specific variable strings
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$sql_select = ($type == 'posts') ? 'm.post_id' : 'DISTINCT t.topic_id';
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$sql_from = ($type == 'posts') ? '' : TOPICS_TABLE . ' t, ';
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$sql_topic = ($type == 'posts') ? '' : 'AND t.topic_id = p.topic_id';
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$sql_time = ($sort_days) ? 'AND p.post_time >= ' . ($current_time - ($sort_days * 86400)) : '';
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$field = ($type == 'posts') ? 'm.post_id' : 't.topic_id';
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// Are we searching within an existing search set? Yes, then include the old ids
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$sql_find_in = ($sql_in) ? 'AND ' . $sql_in : '';
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$result_ary = array();
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foreach (array('AND', 'OR', 'NOT') as $bool)
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{
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if (isset($sql_words[$bool]) && is_array($sql_words[$bool]))
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{
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switch ($bool)
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{
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case 'AND':
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case 'NOT':
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foreach ($sql_words[$bool] as $word)
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{
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if (strlen($word) < 4)
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{
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continue;
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}
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$sql_where = (strstr($word, '%')) ? "LIKE $word" : "= $word";
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$sql_and = (isset($result_ary['AND']) && sizeof($result_ary['AND'])) ? "AND $field IN (" . implode(', ', $result_ary['AND']) . ')' : '';
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$sql = "SELECT $sql_select
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FROM $sql_from" . POSTS_TABLE . ' p, ' . SEARCH_MATCH_TABLE . ' m, ' . SEARCH_WORD_TABLE . " w
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WHERE w.word_text $sql_where
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AND m.word_id = w.word_id
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AND w.word_common <> 1
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AND p.post_id = m.post_id
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$sql_topic
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$sql_forums
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$sql_author
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$sql_and
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$sql_time
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$sql_match
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$sql_find_in";
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$result = $db->sql_query($sql);
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/* if ($db->sql_numrows() > 999)
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{
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trigger_error($user->lang['TOO_MANY_SEARCH_RESULTS']);
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}*/
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if (!($row = $db->sql_fetchrow($result)) && $bool == 'AND')
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{
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trigger_error($user->lang['NO_SEARCH_RESULTS']);
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}
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if ($bool == 'AND')
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{
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$result_ary['AND'] = array();
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}
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do
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{
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$result_ary[$bool][] = ($type == 'topics') ? $row['topic_id'] : $row['post_id'];
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}
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while ($row = $db->sql_fetchrow($result));
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$db->sql_freeresult($result);
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}
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break;
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case 'OR':
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$sql_where = $sql_in = '';
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foreach ($sql_words[$bool] as $word)
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{
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if (strlen($word) < 4)
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{
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continue;
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}
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if (strstr($word, '%'))
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{
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$sql_where .= (($sql_where) ? ' OR w.word_text ' : 'w.word_text ') . "LIKE $word";
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}
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else
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{
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$sql_in .= (($sql_in) ? ', ' : '') . $word;
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}
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}
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$sql_where = ($sql_in) ? (($sql_where) ? ' OR ' : '') . 'w.word_text IN (' . $sql_in . ')' : $sql_where;
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$sql_and = (sizeof($result_ary['AND'])) ? "AND $field IN (" . implode(', ', $result_ary['AND']) . ')' : '';
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$sql = "SELECT $sql_select
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FROM $sql_from" . POSTS_TABLE . ' p, ' . SEARCH_MATCH_TABLE . ' m, ' . SEARCH_WORD_TABLE . " w
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WHERE ($sql_where)
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AND m.word_id = w.word_id
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AND w.word_common <> 1
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AND p.post_id = m.post_id
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$sql_topic
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$sql_forums
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$sql_author
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$sql_and
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$sql_time
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$sql_match
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$sql_find_in";
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$result = $db->sql_query($sql);
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while ($row = $db->sql_fetchrow($result))
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{
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$result_ary[$bool][] = ($type == 'topics') ? $row['topic_id'] : $row['post_id'];
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}
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$db->sql_freeresult($result);
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break;
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}
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}
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else
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{
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$sql_words[$bool] = array();
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}
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}
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if (isset($result_ary['OR']) && sizeof($result_ary['OR']))
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{
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$pid_ary = (isset($result_ary['AND']) && sizeof($result_ary['AND'])) ? array_diff($result_ary['AND'], $result_ary['OR']) : $result_ary['OR'];
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}
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else
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{
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$pid_ary = (isset($result_ary['AND'])) ? $result_ary['AND'] : array();
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}
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if (isset($result_ary['NOT']) && sizeof($result_ary['NOT']))
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{
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$pid_ary = (sizeof($pid_ary)) ? array_diff($pid_ary, $result_ary['NOT']) : array();
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}
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unset($result_ary);
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$pid_ary = array_unique($pid_ary);
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if (!sizeof($pid_ary))
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{
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trigger_error($user->lang['NO_SEARCH_RESULTS']);
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}
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$sql = 'SELECT word_text
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FROM ' . SEARCH_WORD_TABLE . '
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WHERE word_text IN (' . implode(', ', array_unique(array_merge($sql_words['AND'], $sql_words['OR'], $sql_words['NOT']))) . ')
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AND word_common = 1';
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$result = $db->sql_query($sql);
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while ($row = $db->sql_fetchrow($result))
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{
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$common_words[] = $row['word_text'];
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}
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$db->sql_freeresult($result);
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}
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else if ($sql_author)
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{
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if ($type == 'posts')
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{
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$sql = 'SELECT p.post_id
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FROM ' . POSTS_TABLE . " p
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WHERE $sql_author
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$sql_forums";
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$field = 'post_id';
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}
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else
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{
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$sql = 'SELECT t.topic_id
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FROM ' . TOPICS_TABLE . ' t, ' . POSTS_TABLE . " p
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WHERE $sql_author
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$sql_forums
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AND t.topic_id = p.topic_id
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GROUP BY t.topic_id";
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$field = 'topic_id';
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}
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$result = $db->sql_query($sql);
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while ($row = $db->sql_fetchrow($result))
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{
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$pid_ary[] = $row[$field];
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}
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$db->sql_freeresult($result);
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}
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return false;
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}
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}
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?>
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