woothemes / sensei

		$answers = false;

		if ( ! intval( $lesson_id ) > 0 || 'lesson' != get_post_type( $lesson_id )

		|| ! intval( $user_id )  > 0 || !get_userdata( $user_id )  ) {

			return false;

		}

        // save some time and get the transient cached data

        $transient_key = 'sensei_answers_'.$user_id.'_'.$lesson_id;

             $user_id = get_current_user_id();

         }

         if ( ! intval( $lesson_id ) > 0 || 'lesson' != get_post_type( $lesson_id )

             || ! intval( $user_id )  > 0 || !get_userdata( $user_id )  ) {

             return false;

         }

         // save some time and get the transient cached data

         $transient_key = 'quiz_grades_'. $user_id . '_' . $lesson_id;

             $user_id = get_current_user_id();

         }

         if ( ! intval( $lesson_id ) > 0 || 'lesson' != get_post_type( $lesson_id )

             || ! intval( $user_id )  > 0 || !get_userdata( $user_id )  ) {

             return false;

         }

         // first check the transient to save a few split seconds

         $transient_key = 'sensei_answers_feedback_'.$user_id.'_'.$lesson_id;