Manual:Hooks/ArticleUndelete

ArticleUndelete
Available from version 1.9.1 When one or more revisions of an article are restored
Define function:	public static function onArticleUndelete( $title, $create ) { ... }
Attach hook:	$wgHooks['ArticleUndelete'][] = 'MyExtensionHooks::onArticleUndelete';
Called from:	SpecialUndelete.php

For more information about attaching hooks, see Manual:Hooks.
For examples of extensions using this hook, see Category:ArticleUndelete extensions.

Details

$title: Title corresponding to the article restored
$create: Whether or not the restoration caused the page to be created (i.e. it didn't exist before)