WordPress at a glance
filter is not described

woocommerce_product_categories_widget_dropdown_args filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_product_categories_widget_dropdown_args', 'filter_function_name_607' );
function filter_function_name_607( $wp_parse_args ){
	// filter...

	return $wp_parse_args;
}
$wp_parse_args
-

Where the hook is called

WC_Widget_Product_Categories::widget()
woocommerce_product_categories_widget_dropdown_args
woocommerce/includes/widgets/class-wc-widget-product-categories.php 229-240
apply_filters(
	'woocommerce_product_categories_widget_dropdown_args',
	wp_parse_args(
		$dropdown_args,
		array(
			'show_count'         => $count,
			'hierarchical'       => $hierarchical,
			'show_uncategorized' => 0,
			'selected'           => $this->current_cat ? $this->current_cat->slug : '',
		)
	)
)

Where in WP core the hook is used WooCommerce

Usage not found.