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<?php
if (!defined("ROOT_PATH"))
{
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exit;
}
/**
* PHP Framework
*
* @copyright Copyright 2013, StivaSoft, Ltd. (http://stivasoft.com)
* @link http://www.phpjabbers.com/
* @package framework
* @version 1.0.11
*/
/**
* A well known object that other ones can use to find related objects or service.
*
* Brief example of use:
*
* <code>
* //Create an instance
* $pjRegistry = pjRegistry::getInstance();
*
* $items = array(1,2,3,'some data');
* //Setter
* $pjRegistry->set('data', $items);
* //or
* pjRegistry::getInstance()->set('data', $items);
*
* //Getter
* $data = $pjRegistry->get('data');
* //or
* $data = pjRegistry::getInstance()->get('data');
* </code>
*
* @package framework
* @since 1.0.0
*/
class pjRegistry
{
/**
* The instance of the registry
*
* @var object
* @staticvar
* @access private
*/
private static $instance;
/**
* Our array of objects
*
* @var array
* @access private
*/
private $objects = array();
/**
* Private constructor to prevent it being created directly
*
* @access private
*/
private function __construct()
{
//prevent directly access.
}
/**
* Prevent cloning of the object: issues an E_USER_ERROR if this is attempted
*
* @access public
*/
public function __clone()
{
trigger_error("Clone is not allowed.", E_USER_ERROR);
}
/**
* Singleton method used to access the object
*
* @access public
* @static
* @staticvar Singleton $instance The Singleton instances of this class.
* @return
*/
public static function getInstance()
{
if (!isset(self::$instance))
{
self::$instance = new self();
}
return self::$instance;
}
/**
* Gets an object from the registry
*
* @param string Key name as string.
* @access public
* @return mixed|null Returns stored value. If <var>key</var> not found returns <b>NULL</b>.
*/
public function get($key)
{
if (isset($this->objects[$key]))
{
return $this->objects[$key];
}
return NULL;
}
/**
* Stores an object in the registry
*
* @param string Key name as string.
* @param mixed Value to store.
* @access public
* @return void
*/
public function set($key, $val)
{
$this->objects[$key] = $val;
}
/**
* Check if an object exists in registry
*
* @param string Key name as string.
* @access public
* @return boolean
*/
public function is($key)
{
return ($this->get($key) !== null);
}
}
?>
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