Available from version 1.16.0
An option to modify which namespaces are searchable.
Define function:
public static function onSearchableNamespaces( &$searchableNamespaces ) { ... }
Attach hook: In extension.json:
	"Hooks": {
		"SearchableNamespaces": "MediaWiki\\Extension\\MyExtension\\Hooks::onSearchableNamespaces"
Called from: File(s): search/SearchEngine.php
Interface: SearchableNamespacesHook.php

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

Details edit

  • &$searchableNamespaces: Array of namespaces ($nsId => $name) which will be used.