PHP Classes
elePHPant
Icontem

File: singleton.class.php

Recommend this page to a friend!
Stumble It! Stumble It! Bookmark in del.icio.us Bookmark in del.icio.us
  Classes of Andrei Alexandru  >  Simple Singleton and Multiton Class  >  singleton.class.php  >  Download  
File: singleton.class.php
Role: Class source
Content type: text/plain
Description: Singleton Implementation Class
Class: Simple Singleton and Multiton Class
Create and manage one or more singleton objects
Author: By
Last change: No cloning
No serialization
Date: 4 years ago
Size: 863 bytes
 

Contents

Class file image Download
<?php
/**
 * Singleton class
 */

class Singleton
{
   
/**
     * The instance of this class
     * @var object
     */
   
private static $instance = null;

   
/**
     * Returns only one instance of this class
     * @return object
     */
   
public static function GetInstance()
    {
        if (!
self::$instance instanceof self)
           
self::$instance = new self();
        return
self::$instance;
    }

   
/**
     * Private constructor
     */
   
private function __construct()
    {

    }

   
/**
     * No serialization allowed
     */
   
public function __sleep()
    {
       
trigger_error("No serialization allowed!", E_USER_ERROR);
    }

   
/**
     * No cloning allowed
     */
   
public function __clone()
    {
       
trigger_error("No cloning allowed!", E_USER_ERROR);
    }
}