Replace the price of a WooCommerce product with the lowest price of a cached comp set. [datafeedr][dfrcs]

replace-woocommerce-price-with-compset-price.php

<?php

/**
 * Replace the price of a WooCommerce product with the lowest price of a cached comp set.
 *
 * Example: From $29.99
 *
 * @param string $price Price wrapped in HTML markup.
 * @param WC_Product $product
 *
 * @return string Updated HTML markup.
 */
add_filter( 'woocommerce_get_price_html', 'mycode_change_main_product_price', 20, 2 );
function mycode_change_main_product_price( $price, $product ) {

	// Create $source product from WooCommerce
	$source            = dfrcs_wc_get_source_of_product();
	$source['context'] = 'wc_single_product_page_price_element';

	// Get the compset for this product.
	$compset = new Dfrcs( $source );

	// If we have a cached version (because we don't want to do this on every product every page load), get
	// the lowest priced product and set that equal to the price.
	if ( $compset->cached && ! $compset->cache_is_expired && ! empty( $compset->lowest_priced_product ) ) {
		$currency = dfrcs_currency( $compset->lowest_priced_product );
		$price    = 'From ' . $currency . dfrapi_int_to_price( $compset->lowest_priced_product['finalprice'] );
	}

	return $price;
}