woocommerce_product_related_posts_relate_by_tag │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_product_related_posts_relate_by_tag', 'wp_kama_woocommerce_product_related_posts_relate_by_tag_filter', 10, 2 );

/**
 * Function for `woocommerce_product_related_posts_relate_by_tag` filter-hook.
 * 
 * @param  $true       
 * @param  $product_id 
 *
 * @return 
 */
function wp_kama_woocommerce_product_related_posts_relate_by_tag_filter( $true, $product_id ){

	// filter...
	return $true;
}

$true

-

$product_id

-

Where the hook is called

$tags_array = apply_filters( 'woocommerce_product_related_posts_relate_by_tag', true, $product_id ) ? apply_filters( 'woocommerce_get_related_product_tag_terms', wc_get_product_term_ids( $product_id, 'product_tag' ), $product_id ) : array();

Where the hook is used in WooCommerce