81 lines
1.4 KiB
PHP
81 lines
1.4 KiB
PHP
<?php
|
|
/**
|
|
* MiniMVC
|
|
*
|
|
* Convention-based micro-framework for PHP
|
|
*
|
|
* @package miniMVC
|
|
* @author Timothy J. Warren
|
|
* @copyright Copyright (c) 2011 - 2012
|
|
* @link https://github.com/timw4mail/miniMVC
|
|
* @license http://philsturgeon.co.uk/code/dbad-license
|
|
*/
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
namespace miniMVC;
|
|
|
|
/**
|
|
* Singleton pattern
|
|
*
|
|
* @package miniMVC
|
|
* @subpackage System
|
|
*/
|
|
trait Singleton {
|
|
|
|
use Generic;
|
|
|
|
/**
|
|
* Singleton object
|
|
*
|
|
* @var self
|
|
*/
|
|
protected static $instance;
|
|
|
|
/**
|
|
* Protected constructor for creating the one instance
|
|
*/
|
|
abstract protected function __construct();
|
|
|
|
/**
|
|
* PHP magic method that is called when an object is treated as a function
|
|
*
|
|
* @param array $params
|
|
* @return self
|
|
*/
|
|
public static function __invoke($params = [])
|
|
{
|
|
return self::get_instance($params);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Singleton getter function
|
|
*
|
|
* @return self
|
|
*/
|
|
public static function &get_instance()
|
|
{
|
|
if ( ! isset(self::$instance))
|
|
{
|
|
$class = __CLASS__;
|
|
|
|
self::$instance = new $class;
|
|
}
|
|
|
|
return self::$instance;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Magic function called when cloning an object
|
|
*/
|
|
public function __clone()
|
|
{
|
|
trigger_error('Clone is not allowed.', E_USER_ERROR);
|
|
}
|
|
}
|
|
|
|
// End of Singleton.php
|