Fulltext boolean search v.2.2 for vB

Hello all!

Moving here from beta forum
https://vborg.vbsupport.ru/showthread.php?t=62218

This hack makes nearly same for vB3 as
[vB 2.2.x] - Mysql 4 Search hack
https://vborg.vbsupport.ru/showthread.php?t=51716
for vB2

You will need MySQL server v4.0.1 or better (but sometimes it may work on 3.23.xx). After installing you will be able to search with empty native vB index (word and postindex tables) and using modifiers.
Allowed modifiers + are ,-, * and "
All modifiers except * should be used only once for one word (in the beginning and without space).
* it should be used at the end of a word.
For example:
windows unix -> will find messages containing at least one these words.
+windows +unix -> will find messages with both this words.
windows* -> will find "windows", "windowss", "windowssauce" or "windowst".
*indows will NOT find "windows"
"some words" -> will find "some words of wisdom", but will not find "some extra words".
Search phrase length limitations replaced with results number limitation.
Value of old "Search Index Maximum Word Length" used to limit number of posts in the result returned by fulltext search (control panel/Message Searching Options)
Supposed that it must run faster then native vB search

History:
v.2.2 [5 Apr 2004]
- search words relevance (when sort by relevance) added at last
but little different then native vB (it may not work when searching with * modifiers)
- attempt to fix incompatibility with other hacks
=to upgrade replace code block #5 in search.php with latest one

v.2.1 [4 Apr 2004]
- Excluding from search forums with "Index New Posts in Search Engine" option set to "No"

v.2.0 [30 Mar 2004]
-"Similar Threads" now must start working (to move from 1.x to 2 just change one more script - functions_search.php)

v.1.9 [29 Mar 2004]
-checking if $query string is not empty before running fill text sql

v.1.8 [20 Mar 2004]
- line numbers and higlight code changed for VB3 Gold
- more tests and error explanations

v.1.7 [9 Mar 2004]
- MySQL error for administrators bug fixed
checking is $not_forumid string exixts before adding it to query

v.1.6 [9 Mar 2004]
- national letters bug fixed
preg_replace("~[^\w\"\-+\* ]~i", "", $query);
was replaced by
preg_replace("~[^\w\xC0-\xFF\"\-+\* ]~i", "", $query);

v.1.5 [8 Mar 2004]
- TABLE_PREFIX bug fixed
- slightly optimised SQL requests

v.1.4 [8 Mar 2004]
- delete_post_index function turned off
- more tests and error explanations

v.1.3 [7 Mar 2004]
- less code because of using native vB $postQueryLogic and $threadQueryLogic conditions
- more tests and error explanations

v.1.2 [7 Mar 2004]
- boolean mode can be turned off in AdminCP ("Allow Search Wild Cards" setting)
- "titles only" search fixed
- limiting number of matches retunned by fulltext search AFTER applying search conditions

v.1.1 [7 Mar 2004]
- HighLight support added

[msimplay]

Originally Posted by Boofo

The "Unanswered Threads" hack doesn't work with it, either, I am told.

lol yeh thats coz i tested it for ya

[Boofo]

And a good job you did.

[JohnWoo]

it must start working after fix in latest v.1.9

[msimplay]

any chance of upgrade instructions ?

[JohnWoo]

1. after

// code block 5 added by [FullText Search hack] (getting list of posts with match against search phrase)

add

if (strlen($query) > 0) {

2. before

// end of code block 5 added by [FullText Search hack]

add

}


it is all

[msimplay]

thanks i didnt fancy rehacking the whole thing
does this now allow unanswered topics mod and similar threads ?

[JohnWoo]

unanswered topics mod - yes
similar threads - not, but thinking and think that it is near

[msimplay]

Originally Posted by JohnWoo

unanswered topics mod - yes
similar threads - not, but thinking and think that it is near

good work

[JohnWoo]

ok Think that "Similar Threads" works with v.2.0

[msimplay]

Originally Posted by JohnWoo

ok Think that "Similar Threads" works with v.2.0

yayyyyyy it works
but u made a tiny mistake

instead of searching for

PHP Code:

function fetch_similar_threads($threadtitle, $threadid = 0) { 


you should search for and replace

PHP Code:

function fetch_similar_threads($threadtitle, $threadid = 0) 


on step 4 of the install otherwise you get a parse error