dynamic_sidebar() function without call

Hello,

I am using Widget Logic plugin to show/hide widgets according to my site pages.

I want to create logic like If there is no widget than there is no widget wrapper in content.

Example:

$the_sidebars = wp_get_sidebars_widgets();
$featured     = count( $the_sidebars['featured-widget-area'] );
$featured2    = count( $the_sidebars['featured2-widget-area'] );

if( $featured>0 && $featured2>0 ){
echo '<div id="featured-widget-wrapper">';
dynamic_sidebar( 'featured-widget-area' );
dynamic_sidebar( 'featured2-widget-area' );
echo '</div>';
}

The problem is that the $featured variable is always with all widgets that are currently set, but I need only widgets that are available for current post/page. (I am disabling widgets with Widget Logic plugin.)

I think I need to check output of a sidebar but I don’t know the function. the dynamic_sidebar() always calls and print widgets. So is there any function which works same as dynamic_sidebar() except call and print the widgets?

Thanks
Bimal