<?php
/**
 * Singleton configuration class
 * Register configuration directives with this class
 */
class Config {
	private static $instance = null;

	private $config = array();

	private function __construct() {
	}

	public static function getInstance() {
		if (self::$instance === null) {
			$clazz = __CLASS__;
			self::$instance = new $clazz();
		}
		return self::$instance;
	}

	public function register($key, $value) {
		$this->config[$key] = $value;
		return;
	}

	public function retrieve($key) {
		if (isset($this->config[$key])) {
			return $this->config[$key];
		} else {
			return false;
		}
	}
}
?>