wikimedia / mediawiki

			in_array( $wikiId, $wgLocalDatabases, true );

	}

	public function lookupCentralIds(

		array $idToName, $audience = self::AUDIENCE_PUBLIC, $flags = self::READ_NORMAL

	) {

		if ( !$idToName ) {

			return [];

		}

		$audience = $this->checkAudience( $audience );

		list( $index, $options ) = DBAccessObjectUtils::getDBOptions( $flags );

		$db = wfGetDB( $index );

		$tables = [ 'user' ];

		$fields = [ 'user_id', 'user_name' ];

		$where = [

			'user_id' => array_map( 'intval', array_keys( $idToName ) ),

		];

		$join = [];

		if ( $audience && !$audience->isAllowed( 'hideuser' ) ) {

			$tables[] = 'ipblocks';

			$join['ipblocks'] = [ 'LEFT JOIN', 'ipb_user=user_id' ];

			$fields[] = 'ipb_deleted';

		}

		$res = $db->select( $tables, $fields, $where, __METHOD__, $options, $join );

		foreach ( $res as $row ) {

			$idToName[$row->user_id] = empty( $row->ipb_deleted ) ? $row->user_name : '';

		}

		return $idToName;

	}

	public function lookupUserNames(

		array $nameToId, $audience = self::AUDIENCE_PUBLIC, $flags = self::READ_NORMAL

		return $idToName;

	}

	public function lookupUserNames(

		array $nameToId, $audience = self::AUDIENCE_PUBLIC, $flags = self::READ_NORMAL

	) {

		if ( !$nameToId ) {

			return [];

		}

		$audience = $this->checkAudience( $audience );

		list( $index, $options ) = DBAccessObjectUtils::getDBOptions( $flags );

		$db = wfGetDB( $index );

		$tables = [ 'user' ];

		$fields = [ 'user_id', 'user_name' ];

		$where = [

			'user_name' => array_map( 'strval', array_keys( $nameToId ) ),

		];

		$join = [];

		if ( $audience && !$audience->isAllowed( 'hideuser' ) ) {

			$tables[] = 'ipblocks';

			$join['ipblocks'] = [ 'LEFT JOIN', 'ipb_user=user_id' ];

			$where[] = 'ipb_deleted = 0 OR ipb_deleted IS NULL';

		}

		$res = $db->select( $tables, $fields, $where, __METHOD__, $options, $join );

		foreach ( $res as $row ) {

			$nameToId[$row->user_name] = (int)$row->user_id;

		}

		return $nameToId;

	}

}