Dear vincent,
Thanks for your suggestion.
The function of my program is to input some equal information of a group of members with same web-page.
All infromation of each member of a group is saved in MYSQL table until 'Update' button is pressed.
So I expected that it is a good way to use temporary table to save all records before
confirm to save them in real table.
May Cookie or suitable not suitable for my case? do you agree?
There is too few articles to memtion about this situation on book or on the web.