woocommerce_format_sale_price │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_format_sale_price', 'wp_kama_woocommerce_format_sale_price_filter', 10, 3 );

/**
 * Function for `woocommerce_format_sale_price` filter-hook.
 * 
 * @param  $price         
 * @param  $regular_price 
 * @param  $sale_price    
 *
 * @return 
 */
function wp_kama_woocommerce_format_sale_price_filter( $price, $regular_price, $sale_price ){

	// filter...
	return $price;
}

$price

-

$regular_price

-

$sale_price

-

Where the hook is called

return apply_filters( 'woocommerce_format_sale_price', $price, $regular_price, $sale_price );

Where the hook is used in WooCommerce