woocommerce_cart_contents_changed хук-фильтр . WC 1.0

If it's not empty, it's been already populated by the loop above.

Использование

add_filter( 'woocommerce_cart_contents_changed', 'filter_function_name_457' );
function filter_function_name_457( $cart_contents ){
	// filter...

	return $cart_contents;
}

$cart_contents

-

Где вызывается хук

$this->cart->set_cart_contents( apply_filters( 'woocommerce_cart_contents_changed', $cart_contents ) );

$this->cart_contents = apply_filters( 'woocommerce_cart_contents_changed', $this->cart_contents );

$cart->cart_contents = apply_filters( 'woocommerce_cart_contents_changed', $cart->cart_contents );

Где используется хук в ядре WooCommerce