Calculating WooCommerce Shipping Costs - WooCode Tips Series

functions.php

<?php
/**
 * Calculate Shipping Costs Programmatically in WooCommerce
 * - fetch standard methods
 * - integrate with Flexible-shipping Plugin
 */

function ct_get_available_shipping_methods_for_customer_cart($country_code = 'PL') {

    if (function_exists('WC')) {
        if (!WC()->cart || WC()->cart->is_empty()) {
            return array();
        }

        $enabled_methods = array();
        $package = WC()->cart->get_shipping_packages()[0]; // Assuming single package
        $package['destination'] = array('country' => $country_code);
        $zones = WC_Shipping_Zones::get_zones();

        foreach ($zones as $zone) {
            $matching_locations = array_filter($zone['zone_locations'], function ($location) use ($country_code) {
                return $location->code == $country_code;
            });

            if (!empty($matching_locations)) {
                $shipping_zone = new WC_Shipping_Zone($zone['id']);
                $available_methods = $shipping_zone->get_shipping_methods(true);

                foreach ( $available_methods as $method ) {
                    if ( $method->is_enabled() ) {
                        // Set the current package
                        if ( method_exists( $method, 'calculate_shipping' ) ) {
                            $method->calculate_shipping( $package );
                            $rates = $method->rates;

                            foreach ( $rates as $rate ) {
                                $enabled_methods[] = array(
                                    'method_title' => $method->get_method_title(),
                                    'method_id'    => $rate->get_id(),
                                    'cost'         => floatval($rate->get_cost()),
                                );
                            }
                        }
                        else {
                            $method_id = get_class($method);
                            $enabled_methods[] = array(
                                'method_title' => $method->get_method_title(),
                                'method_id'    => $method_id,
                                'cost'         => floatval($method->get_option('cost')),
                            );
                        }
                    }
                }
                return $enabled_methods;
            }
        }
    } else {
        return array();
    }
}



add_action('wp_loaded', 'ct_test_script_1');

function ct_test_script_1() {
    $param_name = 'ct_trigger_shipping_methods_info';

    // Check if the special query string parameter is present
    if (isset($_GET[$param_name]) && !empty($_GET[$param_name])) {
        $shipping_methods = ct_get_available_shipping_methods_for_customer_cart();
        header('Content-Type: application/json');
        echo json_encode($shipping_methods);
        exit; // Stop further execution to prevent loading the full page
    }
}