<?php


class Registry {
   static private $data = array();


   static public function get($key) {
      return (isset(self::$data[$key]) ? self::$data[$key] : NULL);
   }


   static public function set($key, $value) {
      self::$data[$key] = $value;
   }


   static public function has($key) {
      return isset(self::$data[$key]);
   }

}


?>