Function _g

Convenience method to get/set a global variable

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

Parameters summary
`string`	`$key`	The global variable name
`mixed`	`$value = ''`	The value to set to the global variable; if it is not given, it is Getter method.

Return value summary
`mixed`	The value of the global variable