woocommerce_upsell_display_args │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_upsell_display_args', 'wp_kama_woocommerce_upsell_display_args_filter' );

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

	// filter...
	return $array;
}

$array

-

Where the hook is called

$args = apply_filters(
	'woocommerce_upsell_display_args',
	array(
		'posts_per_page' => $limit,
		'orderby'        => $orderby,
		'order'          => $order,
		'columns'        => $columns,
	)
);

Where the hook is used in WooCommerce