Precise Similar Topics

All 3.3.x (Rhea) Extensions released in our Extensions Database will be announced in here. All support for released Extensions needs to take place in the Customisations Database.
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NOTICE: This forum is only for the announcement of new releases and/or updates of Extensions. Any Extension support should be obtained through the Customisations Database in the support area designated for each Extension.

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Extensions Robot
Extensions Robot
Extensions Robot
Posts: 28349
Joined: Sat Aug 16, 2003 7:36 am

Precise Similar Topics

Post by Extensions Robot »

Extension name: Precise Similar Topics
Author: MattF
Extension description: This extension will display a list of similar (related) topics at the bottom of the current topic's page. It matches keywords in the current topic's title with other topic titles in your board's forums and determines the most relevant and closely matched results. There are Admin Control Panel settings available to fine tune the display and performance of Precise Similar Topics, under the Extensions tab.

Overall winner of the 2010 "Summer of MODs" competition at

  • Displays a list of the most similar/relevant topics at the bottom of the current topic page.
  • Similar topics are sorted in order by their relevance.
  • Adjust how many Similar Topics to display per page.
  • Adjust the age-span of topics to display (ie: display similar topics from the past year only).
  • Enable or disable similar topics in each forum.
  • Exclude specific forums from being searched for similar topics.
  • Specify which forums can share similar topics with other forums.
  • A query caching option reduces SQL overhead on large boards.
  • Permission settings for users and groups determine who can view similar topics.
  • Forum privacy is maintained, topics from unauthorized and password-protected forums will not be shown to users who should not see them.
  • Multi-lingual support for stop-words (common words that are ignored).
  • Multiple languages are supported. View the pre-installed localizations.
  • Compatible with most styles, more added with every release.
  • Built-in compatibility with my "Topic Preview" extension.
  • Image (all versions)
  • Image (all versions)
  • Image (all versions)
  • MySQL, MariaDB or PostgreSQL database (SQLite, Oracle and MS SQL Server not supported)
  • Similar topic searches are not case sensitive.
  • Short words (less than 3 or 4 letters) are ignored
  • Stop-words are ignored (the, and, some, etc.) full list of stopwords.
  • Non-English boards use phpBB's custom ignore-word list as stop-words.
  • If a word is present in more than 50% of all topic titles, it is considered too common and is treated as a stop-word and is ignored.
History: Extension version: 1.5.3
Tested on phpBB version: 3.3.0

Download file:
File size: 179.19 KiB

Extension overview page: View

Except where otherwise noted, the phpBB Team is not responsible nor required to provide support for this extension. By installing this extension, you acknowledge that the phpBB Support Team or phpBB Extension Customisations Team may not be able to provide support.

-->Extension support<--
Last edited by Extensions Robot on Wed Jun 10, 2020 11:18 pm, edited 1 time in total.
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Infrastructure Team Leader
Infrastructure Team Leader
Posts: 26346
Joined: Sat Dec 04, 2004 3:44 pm
Location: The netherlands.
Name: Paul Sohier

Re: Precise Similar Topics

Post by Paul »

Extension validated/released
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