<?php

 // Single instance mode(Pardon me for my Chinglish...if there is someone look this...)

 class Single {

     // the private construct method for not to be extends or get instance

     private function __construct()

     {

         // in this moment just do nothing

     }

     private static $instance = null; // for store the single instance

     // private function __clone(){} # Is it necessary?

     public static function getObj()

     {

         if ( ! isset(self::$instance) )

         {

             $obj = new self();

             return self::$instance = $obj;

         }

         else

             return self::$instance;

     }

 }

 // $single = new Single(); 

 $single = Single::getObj();

 $singl1 = Single::getObj();

 $singl2 = Single::getObj();

 var_dump($single, $singl1, $singl2);

 if ($single === $singl1)

     echo '<pre>So...Like this, is it right? ';