Filter content for categories widget

/** Filter content for categories widget */
function widget_categories_args_filter( $cat_args ) {
    $categories_name = array( 'apps', 'entertainment' );
    $include_arr = array();

    foreach ($categories_name as $data) {
        $include_arr[] = get_cat_ID( $data );
    }

    if ( isset( $cat_args['include'] ) && ! empty( $cat_args['include'] ) ) {
        $include_arr = array_unique( array_merge( explode( ',', $cat_args['include'] ), $include_arr ) );
    }
    $cat_args['include'] = implode( ',', $include_arr );
    return $cat_args;
}
add_filter( 'widget_categories_args', 'widget_categories_args_filter', 10, 1 );