[PHP] Re: Singletons

[Carlos Medina]

Hi,
here is in my opinion, what you can do:

class Base
{
  private $foo;
  private function __construct()
  {}

  public function getFoo()
  {
    return $this->foo;
  }

  public function setFoo( $foo )
  {
      $this->foo = $foo;
  }
}

class Singleton extends Base
{
  public function __construct()
  {}

  private function __clone()
  {}

  public static function getInstance()
  {
    static $instance = null;
    if (!isset($instance))
      $instance = new self();
      $instance->setFoo( 'singleton' );
    return $instance;
  }
}


$bar = Singleton::getInstance();
echo $bar->getFoo(); // "Singleton"

Regards

Carlos

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