Function _getLangInURI

Check if the URI has a language code and return it when it matches For example,

Package: PHPLucidFrame\Core
Copyright: Copyright (c), PHPLucidFrame.
License: MIT License This source file is subject to the MIT license that is bundled with this source code in the file LICENSE
Author: Sithu sithu@phplucidframe.com
Located at helpers/utility_helper.php

Return value summary
`mixed`	The language code if it has one, otherwise return FALSE