Mine

<phpclass question {   private questioninfo = array();   private registry = null;   private id = 0;   public function __construct($id, &$reg)   {       if (!is_object($reg))       {          exit("Registry not a valid object.")       }       $this->registry &= $reg;           #Load info       if ($this->validate($id))       {          $this->questioninfo = $this.load();       }        else        {          exit('Not a valid question id. Please contact your Administrator');       }   }   private function validate($id)   {      if ($this->registry == null)      {         exit('Internal Error: Registry object not set');      }      $validate = $this->registry->db->query_read("SELECT questionid As article WHERE                                       threadid = $id");      if($validate)      {        $this->id = $id;        return true;      }      else      {        return false;      }   } } #Should only be called after validate()! public function load() {    $this->questioninfo = $this->registry->db->query_read("SELECT * from kb_articles                                                            WHERE threadid = " . $this->id ."); }            }