gistfile1.txt

// Include WP 
define('WP_USE_THEMES', false);        
in
// actually contains what you would expect
var_dump($wp_query);
//set it as a global (get same error with or without this set) 
global $wp_query;

class WordpressHeader extends Module
{
  public function hookDisplayHeader(){

	        
                return '<link rel="stylesheet" type="text/css" media="all" href="'. get_stylesheet_uri() . '">';
                do_action( 'init' );	


	}


		public function hookDisplayFooter(){
			$wp_query = new WP_Query( 'post_type=any', 'nopaging=true'  );
// same error with or without this global set 
			global $wp_query
                  //here it returns NULL 

                 return   dynamic_sidebar( 'footer' );

        
	}

                # return   dynamic_sidebar( 'footer' );

        
	}
}