tt-rss/plugins/mobile/logout.php

<?php
	$basedir = dirname(dirname(dirname(__FILE__)));

	set_include_path(
		dirname(__FILE__) . PATH_SEPARATOR .
		$basedir . PATH_SEPARATOR .
		"$basedir/include" . PATH_SEPARATOR .
		get_include_path());

	require_once "mobile-functions.php";

	logout_user();

	header("Location: index.php");
?>