dikini.net

• use the memoize pattern to implement a singleton

function &get_instance() {
  static $instance;
  if(empty($instance)) {
    $instance = new SingletonClass();
  }
  return $instance;
}

class Singleton {
  private static $instance = null;

  private static function __construct() {  }

  public  function get_instance() {
    if(empty(self::$instance) { self::$instance = new Singleton(); }
    return self::$instance;
  }
}