BetterPHP

hello again .i got a question! firstly i fill the form customer data (a field is cust_id).Then i will fill the from purchase.in purchase form a field is cust_id which is the foreign key .My question is - how do I get automatically complete of the Foreign Key field of the form purchase since i alrady filled it in customer form ?

Do you mean a field as in

[syntax=xhtml]<input type="text" name="cust_id" />[/syntax]
Or a column in the database ?

both... anyway i solve it using session variables tnx for reply