Rebuilding a Cart

[jsmit2]

I want the user to be able to click in a link in his mail and that he gets a previous cart loaded in.

For example in his mail:

 

Thanks for ordering, do you want order this again? click here!.

 

On the here is a link to a php file in my module.

 

How do I get the php file to re-use the shopping cart he previously had filled?

[jsmit2]

I think I found out how. First I query the database for the product list of the old cart. Then I create a new cart using the Cart class and add the products again.