WordPress at a glance
filter is not described

woocommerce_product_query_tax_query filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_product_query_tax_query', 'filter_function_name_5778', 10, 2 );
function filter_function_name_5778( $tax_query, $that ){
	// filter...

	return $tax_query;
}
$tax_query
-
$that
-

Where the hook is called

WC_Query::get_tax_query()
woocommerce_product_query_tax_query
woocommerce/includes/class-wc-query.php 778
return array_filter( apply_filters( 'woocommerce_product_query_tax_query', $tax_query, $this ) );

Where in WP core the hook is used WooCommerce

Usage not found.