woocommerce_product_categories_widget_product_terms_args filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_product_categories_widget_product_terms_args', 'filter_function_name_5020' );
function filter_function_name_5020( $array ){
	// filter...

	return $array;
}

$array

-

Where the hook is called

apply_filters(
	'woocommerce_product_categories_widget_product_terms_args',
	array(
		'orderby' => 'parent',
		'order'   => 'DESC',
	)
)

Where in WP core the hook is used WooCommerce