Registry OOP

[jgetner]

need help with my set() method as i'am trying to set my class instances in an array then call the ID key with a get method.. But it will not return the array with the instance of the class inside.

any suggestions and advice would be greatly appreciated.

namespace main;

interface iregistry
{

public static function instance();

public static function set($id , $class);

public static function get($id);

}

class registry implements iregistry
{
	private static $classes=array();

private static $config=array();

private static $instance;

private function __construct()
{

}

private function __clone()
{

}

public static function instance()
{
	if(! self::$instance instanceof self)
	{
		self::$instance = new self();
	}

	return self::$instance;
}

public static function set($id , $class)
{
    static $init;

	if(!isset(self::$instance->classes[$id]) && !\class_exists($class))
	{
		function __autoload($class)
		{
			require_once('libary/' . $class);
		}
	}

	if(\class_exists($class))
	{
		$init = new $class;
	}
	self::$instance->classes[$id]= $init;

	return self::$instance->classes[$id];
}

public static function get($id)
{
	if(!isset(self::$instance->classes[$id]))
	{
		throw new \Exception(' The Object ID You Requested Does Not Exist ');
	}

	elseif(isset(self::$instance->classes[$id]))
	{
		return self::$instance->classes[$id];
	}
}
}

testcase

use main\registry;

require_once('registry.class.php');


$reg = registry::instance();

$reg->set('display' , 'display.class.php');

try 
{
	$reg->get('display');
}

catch(Exception $e)
{
	echo $e->getmessage();
}

Solution found.