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Simplified routines somewhat and introduced title searching
git-svn-id: file:///svn/phpbb/trunk@1868 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
Paul S. Owen
parent
8e642d5d60
commit
09f4ad7012
1 changed files with 162 additions and 289 deletions
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@ -19,57 +19,56 @@
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*
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***************************************************************************/
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function clean_words($entry, &$stopword_list, &$synonym_list)
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function clean_words($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 $init_match = array('^', '$', '&', '(', ')', '<', '>', '`', "'", '|', ',', '@', '_', '?', '%');
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static $init_replace = array(" ", " ", " ", " ", " ", " ", " ", " ", "", " ", " ", " ", " ", " ", " ");
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static $later_match = array("-", "~", "+", ".", "[", "]", "{", "}", ":", "\\", "/", "=", "#", "\"", ";", "*", "!");
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static $later_replace = array(" ", " ", " ", " ", " ", " ", " ", " ", " ", " " , " ", " ", " ", " ", " ", " ", " ");
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static $sgml_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 $sgml_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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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($entry)) . " ";
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$entry = str_replace($sgml_match, $sgml_match, $entry);
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$entry = str_replace($accent_match, $accent_replace, $entry);
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// Replace line endings by a space
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$entry = preg_replace("/[\n\r]/is", " ", $entry);
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// Remove URL's
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$entry = preg_replace("/\b[a-z0-9]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/]+)?/si", " ", $entry);
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// Filter out strange characters like ^, $, &, change "it's" to "its"
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// str_replace with arrays is buggy in some PHP versions so traverse the arrays manually ;(
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for($i = 0; $i < count($init_match); $i++)
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for($i = 0; $i < count($accent_match); $i++)
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{
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$entry = str_replace($init_match[$i], $init_replace[$i], $entry);
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$entry = str_replace($accent_match[$i], $accent_replace[$i], $entry);
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}
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// Quickly remove BBcode.
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$entry = preg_replace("/\[code:[0-9]+:[0-9a-z]{10,}\].*?\[\/code:[0-9]+:[0-9a-z]{10,}\]/is", " ", $entry);
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$entry = preg_replace("/\[img\].*?\[\/img\]/is", " ", $entry);
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$entry = preg_replace("/\[\/?[a-z\*=\+\-]+[0-9a-z]?(\:[a-z0-9]+)?:[a-z0-9]{10,}(\:[a-z0-9]+)?=?.*?\]/si", " ", $entry);
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// URLs
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$entry = preg_replace("/\[\/?[a-z\*]+[=\+\-]?[0-9a-z]+?:[a-z0-9]{10,}[=.*?]?\]/si", " ", $entry);
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$entry = preg_replace("/\[\/?url(=.*?)?\]/si", " ", $entry);
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// Numbers
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$entry = preg_replace("/\b[0-9]+\b/si", " ", $entry);
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// HTML entities like &1234;
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$entry = preg_replace("/\b&[a-z]+;\b/is", " ", $entry);
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// 'words' that consist of <2 or >50 characters are removed.
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$entry = preg_replace("/\b[a-z0-9]{1,2}?\b/si", " ", $entry);
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$entry = preg_replace("/\b[a-z0-9]{50,}?\b/si", " ", $entry);
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// Remove some more strange characters
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for($i = 0; $i < count($later_match); $i++)
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if( $mode == "post" )
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{
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$entry = str_replace($later_match[$i], $later_replace[$i], $entry);
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// HTML entities like
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$entry = preg_replace("/\b&[a-z]+;\b/is", " ", $entry);
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// Replace line endings by a space
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$entry = preg_replace("/[\n\r]/is", " ", $entry);
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// Remove URL's
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$entry = preg_replace("/\b[a-z0-9]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/]+)?/si", " ", $entry);
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// Quickly remove BBcode.
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$entry = preg_replace("/\[img:[a-z0-9]{10,}\].*?\[\/img:[a-z0-9]{10,}\]/is", " ", $entry);
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$entry = preg_replace("/\[\/?url(=.*?)?\]/si", " ", $entry);
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$entry = preg_replace("/\[\/?[a-z\*=\+\-]+(\:?[0-9a-z]+)?:[a-z0-9]{10,}(\:[a-z0-9]+)?=?.*?\]/si", " ", $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/si", " ", $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( $mode == "post" )
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{
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// 'words' that consist of <=2 or >=50 characters are removed.
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$entry = preg_replace("/\b([a-z0-9]{1,2}|[a-z0-9]{50,})\b/si", " ", $entry);
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}
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if( !empty($stopword_list) )
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@ -77,7 +76,11 @@ function clean_words($entry, &$stopword_list, &$synonym_list)
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for ($j = 0; $j < count($stopword_list); $j++)
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{
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$filter_word = trim(strtolower($stopword_list[$j]));
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$entry = preg_replace("/\b" . phpbb_preg_quote($filter_word, "/") . "\b/is", " ", $entry);
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if( ( $filter_word != "and" && $filter_word != "or" && $filter_word != "not" ) || $mode == "post" )
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{
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$entry = preg_replace("/\b" . phpbb_preg_quote($filter_word, "/") . "\b/is", " ", $entry);
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}
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}
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}
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@ -86,39 +89,18 @@ function clean_words($entry, &$stopword_list, &$synonym_list)
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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[$j])));
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$entry = preg_replace("/\b" . phpbb_preg_quote(trim($match_synonym), "/") . "\b/is", " " . trim($replace_synonym) . " ", $entry);
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if( ( $match_synonym != "and" && $match_synonym != "or" && $match_synonym != "not" &&
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$replace_synonym != "and" && $replace_synonym != "or" && $replace_synonym != "not" ) || $mode == "post" )
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{
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$entry = preg_replace("/\b" . phpbb_preg_quote(trim($match_synonym), "/") . "\b/is", " " . trim($replace_synonym) . " ", $entry);
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}
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}
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}
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return $entry;
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}
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function clean_words_search($entry)
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{
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$char_match = array("^", "$", "&", "(", ")", "<", ">", "`", "'", "|", ",", "@", "_", "?", "%", "~", ".", "[", "]", "{", "}", ":", "\\", "/", "=", "#", "\"", ";", "!");
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$char_replace = array(" ", " ", " ", " ", " ", " ", " ", " ", "", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ");
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$sgml_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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$sgml_replace = array(" ", "s", "a", "a", "a", "a", "a", "a", "a", "c", "e", "e", "e", "e", "i", "i", "i", "i", "o", "n", "o", "o", "o", "o", "o", "o", "u", "u", "u", "u", "y", "t", "y");
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$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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$accent_replace = array("s", "a", "a", "a", "a", "a", "a", "a", "c", "e", "e", "e", "e", "i", "i", "i", "i", "o", "n", "o", "o", "o", "o", "o", "o", "u", "u", "u", "u", "y", "t", "y");
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$entry = " " . strip_tags(strtolower($entry)) . " ";
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$entry = str_replace("+", " and ", $entry);
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$entry = str_replace("-", " not ", $entry);
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$entry = str_replace($sgml_match, $sgml_match, $entry);
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$entry = str_replace($accent_match, $accent_replace, $entry);
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$entry = str_replace($char_match, $char_replace, $entry);
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$entry = preg_replace("/\b[0-9]+\b/", " ", $entry);
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return $entry;
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}
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function split_words(&$entry)
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{
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preg_match_all("/\b(\w[\w']*\w+|\w+?)\b/", $entry, $split_entries);
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@ -126,16 +108,123 @@ function split_words(&$entry)
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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, $lang;
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$stopword_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, $synonym_array));
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while( list($word_in, $search_matches) = @each($search_raw_words) )
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{
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$title_match = ( $word_in == 'title' ) ? 1 : 0;
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if( count($search_matches) )
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{
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$word = array();
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sort($search_matches);
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$word_text_sql = "";
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for ($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] != "" && $search_matches[$i] != $search_matches[$i-1] )
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{
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$word[] = $search_matches[$i];
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if( $word_text_sql != "" )
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{
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$word_text_sql .= ", ";
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}
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$word_text_sql .= "'" . $search_matches[$i] . "'";
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}
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}
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$sql = "SELECT word_id, word_text, word_common
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FROM " . SEARCH_WORD_TABLE . "
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WHERE word_text IN ($word_text_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 select words", "", __LINE__, __FILE__, $sql);
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}
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$check_words = array();
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$word_id_list = array();
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if( $word_check_count = $db->sql_numrows($result) )
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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']] = $row['word_common'];
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$word_id_list[] = $row['word_id'];
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}
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}
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$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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$word_common = false;
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if( $word_check_count )
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{
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if( isset($check_words[$word[$i]]) )
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{
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$new_match = false;
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}
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}
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if( !$check_words[$word[$i]] )
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{
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$match_word[] = "'" . $word[$i] . "'";
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}
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if( $new_match )
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{
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$sql = "INSERT INTO " . SEARCH_WORD_TABLE . " (word_text, word_common)
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VALUES ('" . $word[$i] . "', 0)";
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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 insert new word", "", __LINE__, __FILE__, $sql);
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}
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}
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}
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$word_sql_in = implode(", ", $match_word);
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$sql = "INSERT INTO " . SEARCH_MATCH_TABLE . " (post_id, word_id, title_match)
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SELECT $post_id, word_id, $title_match
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FROM " . SEARCH_WORD_TABLE . "
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WHERE word_text IN ($word_sql_in)";
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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 insert new word matches", "", __LINE__, __FILE__, $sql);
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}
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}
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}
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remove_common("single", 40, $word_id_list);
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return;
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}
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//
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// Check if specified words are too common now
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//
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function remove_common($percent, $word_id_list = array())
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function remove_common($mode, $percent, $word_id_list = array())
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{
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global $db;
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// 0.01-0.06s
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$sql = "SELECT SUM(forum_posts) AS total_posts
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FROM " . FORUMS_TABLE ;
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$sql = ( $mode == "global" ) ? "SELECT COUNT(DISTINCT post_id) AS total_posts FROM " . SEARCH_MATCH_TABLE : "SELECT SUM(forum_posts) AS total_posts FROM " . FORUMS_TABLE;
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$result = $db->sql_query($sql);
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if( !$result )
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{
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@ -149,12 +238,11 @@ function remove_common($percent, $word_id_list = array())
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$common_threshold = floor($row['total_posts'] * $percent);
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$word_id_sql = "";
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if( count($word_id_list) )
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if( $mode == "single" && count($word_id_list) )
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{
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$word_id_sql = "WHERE word_id IN (" . implode(", ", $word_id_list) . ") ";
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}
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// 0.020-0.024s
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$sql = "SELECT word_id
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FROM " . SEARCH_MATCH_TABLE . "
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$word_id_sql
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@ -166,7 +254,6 @@ function remove_common($percent, $word_id_list = array())
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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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// No matches
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if( $word_count = $db->sql_numrows($result) )
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{
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$common_word_id_list = array();
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@ -204,79 +291,6 @@ function remove_common($percent, $word_id_list = array())
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return $word_count;
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}
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//
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// Search complete wordlist for words that are too common
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//
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function remove_common_global($percent, $delete_common = 0)
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{
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global $db;
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$sql = "SELECT COUNT(DISTINCT post_id) as total_posts
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FROM " . SEARCH_MATCH_TABLE;
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$result = $db->sql_query($sql);
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if( !$result )
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{
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$error = $db->sql_error();
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die("Couldn't get maximum post ID :: " . $sql . " :: " . $error['message']);
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}
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$total_posts = $db->sql_fetchrow($result);
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$total_posts = $total_posts['total_posts'];
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$common_threshold = floor($total_posts * ( $percent / 100 ));
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$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) > $common_threshold";
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$result = $db->sql_query($sql);
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if( !$result )
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{
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$error = $db->sql_error();
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die("Couldn't obtain common word list :: " . $sql . " :: " . $error['message']);
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}
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$common_words = $db->sql_numrows($result);
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while($row = $db->sql_fetchrow($result))
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{
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$common_word_ids[] = $row['word_id'];
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}
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$db->sql_freeresult($result);
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if(count($common_word_ids) != 0)
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{
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$common_word_ids = implode(',',$common_word_ids);
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}
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else
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{
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// We didn't remove any common words
|
||||
return 0;
|
||||
}
|
||||
|
||||
$sql = "UPDATE ". SEARCH_WORD_TABLE ."
|
||||
SET word_common = 1
|
||||
WHERE word_id IN ($common_word_ids)";
|
||||
$result = $db->sql_query($sql);
|
||||
if( !$result )
|
||||
{
|
||||
$error = $db->sql_error();
|
||||
die("Couldn't delete word list entry :: " . $sql . " :: " . $error['message']);
|
||||
}
|
||||
|
||||
if( $delete_common)
|
||||
{
|
||||
$sql = "DELETE FROM ".SEARCH_MATCH_TABLE."
|
||||
WHERE word_id IN ($common_word_ids)";
|
||||
$result = $db->sql_query($sql);
|
||||
if( !$result )
|
||||
{
|
||||
$error = $db->sql_error();
|
||||
die("Couldn't delete word match entry :: " . $sql . " :: " . $error['message']);
|
||||
}
|
||||
}
|
||||
|
||||
return $common_words;
|
||||
}
|
||||
|
||||
function remove_unmatched_words()
|
||||
{
|
||||
global $db;
|
||||
|
|
@ -336,7 +350,6 @@ function remove_unmatched_words()
|
|||
|
||||
case 'mysql':
|
||||
case 'mysql4':
|
||||
// 0.07s
|
||||
$sql = "SELECT w.word_id
|
||||
FROM " . SEARCH_WORD_TABLE . " w
|
||||
LEFT JOIN " . SEARCH_MATCH_TABLE . " m ON m.word_id = w.word_id
|
||||
|
|
@ -355,7 +368,6 @@ function remove_unmatched_words()
|
|||
|
||||
if( $word_id_sql )
|
||||
{
|
||||
// 0.07s (about 15-20 words)
|
||||
$sql = "DELETE FROM " . SEARCH_WORD_TABLE . "
|
||||
WHERE word_id IN ($word_id_sql)";
|
||||
$result = $db->sql_query($sql);
|
||||
|
|
@ -381,143 +393,4 @@ function remove_unmatched_words()
|
|||
return $unmatched_count;
|
||||
}
|
||||
|
||||
function add_search_words($post_id, $post_text, $post_title = "")
|
||||
{
|
||||
global $db, $phpbb_root_path, $board_config, $lang;
|
||||
|
||||
$stopword_array = @file($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");
|
||||
|
||||
$search_text = clean_words($post_text, $stopword_array, $synonym_array);
|
||||
$search_matches = split_words($search_text);
|
||||
|
||||
if( count($search_matches) )
|
||||
{
|
||||
$word = array();
|
||||
sort($search_matches);
|
||||
|
||||
$word_text_sql = "";
|
||||
for ($i = 0; $i < count($search_matches); $i++)
|
||||
{
|
||||
$search_matches[$i] = trim($search_matches[$i]);
|
||||
|
||||
if( $search_matches[$i] != "" && $search_matches[$i] != $search_matches[$i-1] )
|
||||
{
|
||||
$word[] = $search_matches[$i];
|
||||
|
||||
if( $word_text_sql != "" )
|
||||
{
|
||||
$word_text_sql .= ", ";
|
||||
}
|
||||
|
||||
$word_text_sql .= "'" . $search_matches[$i] . "'";
|
||||
}
|
||||
}
|
||||
|
||||
$sql = "SELECT word_id, word_text, word_common
|
||||
FROM " . SEARCH_WORD_TABLE . "
|
||||
WHERE word_text IN ($word_text_sql)";
|
||||
$result = $db->sql_query($sql);
|
||||
if( !$result )
|
||||
{
|
||||
message_die(GENERAL_ERROR, "Couldn't select words", "", __LINE__, __FILE__, $sql);
|
||||
}
|
||||
|
||||
$check_words = array();
|
||||
$word_id_list = array();
|
||||
if( $word_check_count = $db->sql_numrows($result) )
|
||||
{
|
||||
while( $row = $db->sql_fetchrow($result) )
|
||||
{
|
||||
$check_words[$row['word_text']] = $row['word_common'];
|
||||
$word_id_list[] = $row['word_id'];
|
||||
}
|
||||
}
|
||||
|
||||
$match_word = array();
|
||||
for ($i = 0; $i < count($word); $i++)
|
||||
{
|
||||
$new_match = true;
|
||||
$word_common = false;
|
||||
|
||||
if( $word_check_count )
|
||||
{
|
||||
if( isset($check_words[$word[$i]]) )
|
||||
{
|
||||
$new_match = false;
|
||||
}
|
||||
}
|
||||
|
||||
if( !$check_words[$word[$i]] )
|
||||
{
|
||||
$match_word[] = "'" . $word[$i] . "'";
|
||||
}
|
||||
|
||||
if( $new_match )
|
||||
{
|
||||
$sql = "INSERT INTO " . SEARCH_WORD_TABLE . " (word_text, word_common)
|
||||
VALUES ('". $word[$i] . "', 0)";
|
||||
$result = $db->sql_query($sql);
|
||||
if( !$result )
|
||||
{
|
||||
message_die(GENERAL_ERROR, "Couldn't insert new word", "", __LINE__, __FILE__, $sql);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$word_sql_in = implode(", ", $match_word);
|
||||
|
||||
$sql = "INSERT INTO " . SEARCH_MATCH_TABLE . " (post_id, word_id, title_match)
|
||||
SELECT $post_id, word_id, 0
|
||||
FROM " . SEARCH_WORD_TABLE . "
|
||||
WHERE word_text IN ($word_sql_in)";
|
||||
$result = $db->sql_query($sql);
|
||||
if( !$result )
|
||||
{
|
||||
message_die(GENERAL_ERROR, "Couldn't insert new word matches", "", __LINE__, __FILE__, $sql);
|
||||
}
|
||||
}
|
||||
|
||||
remove_common(0.15, $word_id_list);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
function remove_stop_words($entry, &$stopword_list)
|
||||
{
|
||||
|
||||
if( !empty($stopword_list) )
|
||||
{
|
||||
for ($j = 0; $j < count($stopword_list); $j++)
|
||||
{
|
||||
$filter_word = trim(strtolower($stopword_list[$j]));
|
||||
if( $filter_word != "and" && $filter_word != "or" && $filter_word != "not" )
|
||||
{
|
||||
$entry = preg_replace("/\b" . phpbb_preg_quote($filter_word, "/") . "\b/is", " ", $entry);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return $entry;
|
||||
}
|
||||
|
||||
function replace_synonyms($entry, &$synonym_list)
|
||||
{
|
||||
if( !empty($synonym_list) )
|
||||
{
|
||||
for ($j = 0; $j < count($synonym_list); $j++)
|
||||
{
|
||||
list($replace_synonym, $match_synonym) = split(" ", trim(strtolower($synonym_list[$j])));
|
||||
|
||||
if( $match_synonym != "and" && $match_synonym != "or" && $match_synonym != "not" &&
|
||||
$replace_synonym != "and" && $replace_synonym != "or" && $replace_synonym != "not" )
|
||||
{
|
||||
$entry = preg_replace("/\b" . phpbb_preg_quote(trim($match_synonym), "/") . "\b/is", " " . trim($replace_synonym) . " ", $entry);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return $entry;
|
||||
}
|
||||
|
||||
?>
|
||||
?>
|
||||
Loading…
Add table
Reference in a new issue