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Moved all search functions to includes/search.php Paul; please review

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git-svn-id: file:///svn/phpbb/trunk@1781 89ea8834-ac86-4346-8a33-228a782c2dd0
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Bart van Bragt
2002-01-03 11:06:22 +00:00
parent 6c8b10c87a
commit f02324d2cb
5 changed files with 530 additions and 708 deletions
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140
phpBB/develop/search_fill.php
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@@ -1,142 +1,5 @@
<?php
// Clean up an entry (posting), remove HTML, BBcode, stopwords, etc
function clean_words($entry, &$search, &$replace)
{
// Weird, $init_match doesn't work with static when double quotes (") are used...
static $init_match = array('^', '$', '&', '(', ')', '<', '>', '`', "'", '|', ',', '@', '_', '?', '%');
static $init_replace = array(" ", " ", " ", " ", " ", " ", " ", " ", "", " ", " ", " ", " ", " ", " ");
static $later_match = array("-", "~", "+", ".", "[", "]", "{", "}", ":", "\\", "/", "=", "#", "\"", ";", "*", "!");
static $later_replace = array(" ", " ", " ", " ", " ", " ", " ", " ", " ", " " , " ", " ", " ", " ", " ", " ", " ");
static $sgml_match = array("&nbsp;", "&szlig;", "&agrave;", "&aacute;", "&acirc;", "&atilde;", "&auml;", "&aring;", "&aelig;", "&ccedil;", "&egrave;", "&eacute;", "&ecirc;", "&euml;", "&igrave;", "&iacute;", "&icirc;", "&iuml;", "&eth;", "&ntilde;", "&ograve;", "&oacute;", "&ocirc;", "&otilde;", "&ouml;", "&oslash;", "&ugrave;", "&uacute;", "&ucirc;", "&uuml;", "&yacute;", "&thorn;", "&yuml;");
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");
static $accent_match = array("<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>", "<EFBFBD>");
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)) . " ";
$entry = str_replace($sgml_match, $sgml_match, $entry);
$entry = str_replace($accent_match, $accent_replace, $entry);
// Replace line endings by a space
$entry = preg_replace("/[\n\r]/is", " ", $entry);
// Remove URL's
$entry = preg_replace("/\b[a-z0-9]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/]+)?/si", " ", $entry);
// Filter out strange characters like ^, $, &, change "it's" to "its"
// str_replace with arrays is buggy in some PHP versions so traverse the arrays manually ;(
for($i = 0; $i < count($init_match); $i++)
{
$entry = str_replace($init_match[$i], $init_replace[$i], $entry);
}
// Quickly remove BBcode.
$entry = preg_replace("/\[code:[0-9]+:[0-9a-z]{10,}\].*?\[\/code:[0-9]+:[0-9a-z]{10,}\]/is", " ", $entry);
$entry = preg_replace("/\[img\].*?\[\/img\]/is", " ", $entry);
$entry = preg_replace("/\[\/?[a-z\*=\+\-]+[0-9a-z]?(\:[a-z0-9]+)?:[a-z0-9]{10,}(\:[a-z0-9]+)?=?.*?\]/si", " ", $entry);
// URLs
$entry = preg_replace("/\[\/?[a-z\*]+[=\+\-]?[0-9a-z]+?:[a-z0-9]{10,}[=.*?]?\]/si", " ", $entry);
$entry = preg_replace("/\[\/?url(=.*?)?\]/si", " ", $entry);
// Numbers
$entry = preg_replace("/\b[0-9]+\b/si", " ", $entry);
// HTML entities like &1234;
$entry = preg_replace("/\b&[a-z]+;\b/is", " ", $entry);
// 'words' that consist of <2 or >50 characters are removed.
$entry = preg_replace("/\b[a-z0-9]{1,2}?\b/si", " ", $entry);
$entry = preg_replace("/\b[a-z0-9]{50,}?\b/si", " ", $entry);
// Remove some more strange characters
for($i = 0; $i < count($later_match); $i++)
{
$entry = str_replace($later_match[$i], $later_replace[$i], $entry);
}
// Remove stopwords
$entry = preg_replace($search, $replace, $entry);
return $entry;
}
function split_words(&$entry)
{
preg_match_all("/\b(\w[\w']*\w+|\w+?)\b/", $entry, $split_entries);
return $split_entries[1];
}
function remove_common($percent, $delete_common = 0)
{
global $db;
$sql = "SELECT COUNT(DISTINCT post_id) as total_posts
FROM " . SEARCH_MATCH_TABLE;
$result = $db->sql_query($sql);
if( !$result )
{
$error = $db->sql_error();
die("Couldn't get maximum post ID :: " . $sql . " :: " . $error['message']);
}
$total_posts = $db->sql_fetchrow($result);
$total_posts = $total_posts['total_posts'];
$common_threshold = floor($total_posts * ( $percent / 100 ));
$sql = "SELECT word_id
FROM " . SEARCH_MATCH_TABLE . "
GROUP BY word_id
HAVING count(word_id) > $common_threshold";
$result = $db->sql_query($sql);
if( !$result )
{
$error = $db->sql_error();
die("Couldn't obtain common word list :: " . $sql . " :: " . $error['message']);
}
$common_words = $db->sql_numrows($result);
while($row = $db->sql_fetchrow($result))
{
$common_word_ids[] = $row['word_id'];
}
$db->sql_freeresult($result);
if(count($common_word_ids) != 0)
{
$common_word_ids = implode(',',$common_word_ids);
}
else
{
// 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;
}
set_time_limit(0);
$common_percent = 40; // Percentage of posts in which a word has to appear to be marked as common
@@ -147,6 +10,7 @@ include($phpbb_root_path . 'config.'.$phpEx);
include($phpbb_root_path . 'includes/constants.'.$phpEx);
include($phpbb_root_path . 'includes/db.'.$phpEx);
include($phpbb_root_path . 'includes/functions.'.$phpEx);
include($phpbb_root_path . 'includes/search.'.$phpEx);
print "<html>\n<body>\n";
@@ -344,7 +208,7 @@ for(;$postcounter <= $max_post_id; $postcounter += $batchsize)
{
print "<br>Removing common words (words that appear in more than $common_percent of the posts)<br>\n";
flush();
print "Removed ". remove_common($common_percent, 1) ." words that where too common.<br>";
print "Removed ". remove_common_global($common_percent, 1) ." words that where too common.<br>";
}
}