force currency based on shipping adress

I have searched around the forum for a week, and found answers to almost everything, but not this;

In my store you can use two different currencies. When it comes to taxes I have managed to set it up so if the shipping adress is within a zone the tax will be added (in my case VAT if the customer is from the same country I'm shipping from).

My question is; is it possible to do the same with currencies? I have 2 different currencies, GBP and Euro. but for UK citizen I want the order to be charged in GBP, and not have the option to choose euro.

regards
Enriko

Doing that will require some custom coding.

You could try adding some logic to init_currencies.php to check the customer's address and if they're UK and have selected EUR to force it back to GBP.

And/or you could alter the code in the currencies sidebox so that EUR is not offered if the customer's address is UK.

Hi guys, could someone please post the code required to force currency back to the default currency when the customer starts the checkout process?

Thanks. :)

This will set the session's currency to the store's default currency, ignoring any language-related currency override:
$_SESSION['currency'] = DEFAULT_CURRENCY;