tie string value together

hi all, This may sound too easy to ask but I want ot make sure if I'm correct. I have a form with date, month and year select fields in it. When I submit, i want to tie those three fields value together and insert into a field in table which has date data type. Is it correct to tie those three value like below? $Birthdate = $year&$month&&day; And I will insert value in $Birthdate into table. cheers Jack jacky@activelifestyle.com "There is nothing more rewarding than reaching the goal you set for yourself"