toolking

Now, i have try this (add in the functions.php):

    function calculate_totals( $and_taxes = true ) {
    do_action( 'woocommerce_order_before_calculate_totals', $and_taxes, $order );

    $fees_total        = 0;
    $shipping_total    = 0;
    $cart_subtotal_tax = 0;
    $cart_total_tax    = 0;

    $cart_subtotal = $order->get_cart_subtotal_for_order();
    $cart_total    = $order->get_cart_total_for_order();

    // Sum shipping costs.
    foreach ( $order->get_shipping_methods() as $shipping ) {
        $shipping_total += round( $shipping->get_total(), wc_get_price_decimals() );
    }

    $order->set_shipping_total( $shipping_total );

    // Sum fee costs.
    foreach ( $order->get_fees() as $item ) {
        $fee_total = $item->get_total();

        if ( 0 > $fee_total ) {
            $max_discount = round( $cart_total + $fees_total + $shipping_total, wc_get_price_decimals() ) * -1;

            if ( $fee_total < $max_discount && 0 > $max_discount ) {
                $item->set_total( $max_discount );
            }
        }
        $fees_total += $item->get_total();
    }

    // Calculate taxes for items, shipping, discounts. Note; this also triggers save().
    if ( $and_taxes ) {
        $order->calculate_taxes();
    }

    // Sum taxes again so we can work out how much tax was discounted. This uses original values, not those possibly rounded to 2dp.
    foreach ( $order->get_items() as $item ) {
        $taxes = $item->get_taxes();

        foreach ( $taxes['total'] as $tax_rate_id => $tax ) {
            $cart_total_tax += (float) $tax;
        }

        foreach ( $taxes['subtotal'] as $tax_rate_id => $tax ) {
            $cart_subtotal_tax += (float) $tax;
        }
    }

    $order->set_discount_total( ceil( $cart_subtotal - $cart_total, wc_get_price_decimals()
 / 0.05) * 0.05 );
    $order->set_discount_tax( wc_round_tax_total( $cart_subtotal_tax - $cart_total_tax ) );
    $order->set_total( ceil($cart_total / 0.05) * 0.05 + ceil($fees_total / 0.05) * 0.05 + ceil($order->get_shipping_total() / 0.05) * 0.05 + ceil($order->get_cart_tax() / 0.05) * 0.05 + $order->get_shipping_tax(), wc_get_price_decimals() ) );

    do_action( 'woocommerce_order_after_calculate_totals', $and_taxes, $order );

    $order->save();

    return $order->get_total();
}

But it doesn’t work. I can’t see any changes.

Hmm.. ok.. i have try this one now:

add_action( 'woocommerce_order_after_calculate_totals', "custom_order_after_calculate_totals", 10, 2);
    function custom_order_after_calculate_totals($order_tax, $order_total) {
      return ceil ( $order_tax / 0.05 ) * 0.05;
      return ceil ( $order_total / 0.05 ) * 0.05;
}

No Change.. how can i find the correct vars?
Sorry for my Questions, but i am new in Woocommerce ^^

Thank you