Code-Snippets-Functions/Execute a function on a child site/WooCommerce/hide-a-shipping-method-when-a-subscription-is-in-cart.txt

// Conditional function: Check if cart has a subscription
function has_subscription_product( $cart_contents ) {
    foreach ( $cart_contents as $item ) {
        if ( $item['data']->is_type( array('subscription', 'subscription_variation') ) ) {
            return true;
        }
    }
    return false;
}

// Hide shipping  method conditionally
add_filter( 'woocommerce_package_rates', 'filter_package_shipping_rates', 10, 2 );
function filter_package_shipping_rates( $rates, $package ) {
    $targeted_id = 'chrono13'; // Here define the targeted shipping method rate ID

    // If there is a subscription in cart
    if( has_subscription_product( WC()->cart->get_cart() ) && isset($rates[$targeted_id]) ) {
        unset($rates[$targeted_id]); // Hide the shipping method
    }
    return $rates;
}