woocommerce_product_subcategories_args │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_product_subcategories_args', 'wp_kama_woocommerce_product_subcategories_args_filter' );

/**
 * Function for `woocommerce_product_subcategories_args` filter-hook.
 * 
 * @param  $array 
 *
 * @return 
 */
function wp_kama_woocommerce_product_subcategories_args_filter( $array ){

	// filter...
	return $array;
}

$array

-

Where the hook is called

apply_filters(
	'woocommerce_product_subcategories_args',
	array(
		'parent'       => $parent_id,
		'hide_empty'   => 0,
		'hierarchical' => 1,
		'taxonomy'     => 'product_cat',
		'pad_counts'   => 1,
	)
)

Where the hook is used in WooCommerce

add_filter( 'woocommerce_product_subcategories_args', array( $this, 'filter_out_cats' ) );