I have to add a simple str_replace() in the postal code at the moment of the checkout.
That's why in some country, there is the use to add a "-" in the postal code that is not recognized by delivery company's . So, i have to edit this at the moment the adress is insert in the check out according the country of the user.
I use the module "onepagecheckoutps" , but i take a look the code of prestashop, and i thought that i have to edit the class "Address.php", in the function "initialize()", but i'm not sure.
Do you can help me ?