WCSD - PHP

register_sidebar( array(
   'name'          => 'Footer Widget',
   'id'            => 'footer-widget',
   'before_widget' => '<div class="footer-widget">',
   'after_widget'  => '</div>'
) );


add_action( 'twentysixteen_credits', 'wtw_custom_footer_widget' );

function wtw_custom_footer_widget() {
   if ( is_active_sidebar( 'footer-widget' ) ) :
      dynamic_sidebar( 'footer-widget' );
   endif;
}