[ngungo]

This is my first post. I try to convert the Abstract Factory class in c# to php. Of course, it does not work. Can you correct it for me, or give me a hint. Thanks.
--ngungo

<?php
   class GUIFactory {
      function GetFactory() {
			if (TRUE) return new MacFactory();
			else return new WinFactory(); 
      }
      public function CreateButton() {};
      public function CreateLabel() {};
   }

   class WinFactory extends GUIFactory {
      // Its there just to have the Classdiagram going
      $btn = new WinButton();
      $lbl = new WinLabel();
      public override function CreateButton() {
         return $btn;
      }

      public override function CreateLabel() {
         return $lbl;
      }
   }

   class MacFactory function GUIFactory {
      // Its there just to have the Classdiagram going
      $btn = new MacButton();
      $lbl = new MacLabel();
      public override function CreateButton() {
         return $btn;
      }

      public override function CreateLabel() {
         return $lbl;
      }
   }

   abstract class Control {
      public abstract function Show();
   }

   class WinButton extends Control {
      public override function Show() {
         echo "I'm a WinButton: ";
      }
   }

   class MacButton extends Control {
      public override function Show() {
         echo "I'm an MacButton: ";
      }
   }

   class WinLabel extends Control {
      public override function Show() {
         echo "I'm a WinLabel: ";
      }
   }

   class MacLabel extends Control {
      public override function Show() {
         echo "I'm an MacLabel: ";
      }
   }
   
	$factory = GUIFactory.GetFactory();
	$button = factory.CreateButton();
	echo $button->Show();
	
	$label = factory.CreateLabel();
	echo $label->Show();
?>