The extension adds a few parser functions to retrieve page id by name and vice versa.

Requirements:

Usage

Get page NAME by a page ID

{{FULLPAGENAMEFROMID:12345}} -> Namespace:Pagename

Get page ID by revision ID

{{PAGEIDFROMREVISIONID:3456}} -> 12345

Get page NAME by a revision ID

{{FULLPAGENAMEFROMREVISIONID:3456}} -> Namespace:Pagename

Note: you can also use MediaWiki built-in magic {{PAGEID:page_name}} to get page ID from a page name, eg:

{{PAGEID:Namespace:Pagename}} -> 12345