simple Config class

Config.php

<?php

class Config {
    
    private static $items = array();
    
    public static function load($config_file){
        self::$items = require $config_file;
    }
    
    public static function get($key, $default=null){
        if(isset(self::$items[$key])){
            return self::$items[$key];
        }
        return $default;
    }
    
    public static function set($key, $value){
        self::$items[$key] = $value;
    }
}