Function _cfg

Convenience method to get/set a config variable without global declaration within the calling function

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 lc.php

Parameters summary
`string`	`$key`	The config variable name without prefix
`mixed`	`$value = ''`	The value to set to the config variable; if it is omitted, it is Getter method.

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