PHP: Class Config

Config.php

<?php namespace Fig;
/**
*-------------------------------------------------------------------------------
* Config Class
*-------------------------------------------------------------------------------
* This is a simple class for config itens. The propose is to demonstrate the
* explicity of name methods and the use of conditionals.
*
* @package 	Fig 
* @author 	Miguel Ramos <miguel.marques.ramos@gmail.com> 
* @link 	https://groups.google.com/d/forum/php-standards
*/

class Config {
    
    /**
     * Stack of items with options.
     * @var array
     */
    private static $_items = array();

    /**
     * Method to set a config item.
     * 
     * @param string $name  Name of item
     * @param mixed  $value Value of item
     */
    public static function setItem($name, $value){
        self::$_items[$name] = $value;
    }

    /**
     * Method to get an option item.
     * 
     * @param  string $name Name of item
     * @return mixed        Value of item
     */
    public static function getItem($name){
        return self::has($name) ? $self::$_items[$name] : null;
    }

    /**
     * Conditional method to confirm the existence of an item.
     * 
     * @param  string  $item Name of item
     * @return boolean       If exists or not
     */
    public static function has($item){
        return array_key_exists($item, self::$_items);
    }

    /**
     * Conditional method to check if stack is empty.
     * 
     * @return boolean
     */
    public static function isEmpty(){
        return empty(self::$_items);
    }

    /**
     * Reset a item from stack.
     * 
     * @param  string $name Name of option
     * @return void       
     */
    public static function reset($name){
        self::has($name) ? unset(self::$_items[$name] : '';
    }

    /**
     * Reset stack;
     * 
     * @return void
     */
    public static function clean(){
       self::$_items = array();
    }

    /**
     * Is this explicity?
     * 
     * @param  string $name 
     * @return mixed       
     */
    public static function fetchItem($name){
    
    }

    /**
     * Same thing conditional no so explicity?
     * 
     * @param  string $name 
     * @return boolean      
     */
    public static function checkConfig($name){

    }
}

/* @end config.php */