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фильтр не описан

woocommerce_variation_prices хук-фильтр . WC 1.0

Give plugins one last chance to filter the variation prices array which has been generated and store locally to the class. This value may differ from the transient cache. It is filtered once before storing locally.

Использование

add_filter( 'woocommerce_variation_prices', 'filter_function_name_5318', 10, 3 );
function filter_function_name_5318( $transient_cached_prices_array[ $price_hash ], $product, $for_display ){
	// filter...

	return $transient_cached_prices_array[ $price_hash ];
}
$transient_cached_prices_array[ $price_hash ]
-
$product
-
$for_display
-

Где вызывается хук

WC_Product_Variable_Data_Store_CPT::read_price_data()
woocommerce_variation_prices
woocommerce/includes/data-stores/class-wc-product-variable-data-store-cpt.php 382
$this->prices_array[ $price_hash ] = apply_filters( 'woocommerce_variation_prices', $transient_cached_prices_array[ $price_hash ], $product, $for_display );

Где используется хук (в ядре WC)

Не используется.