Support multiple language
The language can be selected directly during transaction initiation with the language preselected tanslation will be used to display the purchase form. Currently supported preselected local are 'fr' for french and 'en' for english. Additionnaly you can overload each label into the html description.
Init json : French
For security purpose the purchase initiation have to be done from server side. Do not initial purchase from client browser using ajax call. In this case you will expose your public and secret key, such any hacker could make request for you.