note 66434 added to function.date

I can find where you can add days to a date as in: $day = (date("d")+9); but i cannot find anything that will take that day and add it to a date correctly... as in $close_date = date("Y-m-".$day.""); what i get is something like 2006-05-32 instead of 2006-06-01 how can i write a function that will correctly do this.. any help would be appreciated.. ---- Server IP: 216.194.113.175 Probable Submitter: 68.213.31.115 ---- X-Spam-Status: No, hits=3.1 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER autolearn=no version=2.64 ---- Manual Page -- http://www.php.net/manual/en/function.date.php Edit -- http://master.php.net/note/edit/66434 Del: integrated -- http://master.php.net/note/delete/66434/integrated Del: useless -- http://master.php.net/note/delete/66434/useless Del: bad code -- http://master.php.net/note/delete/66434/bad+code Del: spam -- http://master.php.net/note/delete/66434/spam Del: non-english -- http://master.php.net/note/delete/66434/non-english Del: in docs -- http://master.php.net/note/delete/66434/in+docs Del: other reasons-- http://master.php.net/note/delete/66434 Reject -- http://master.php.net/note/reject/66434 Search -- http://master.php.net/manage/user-notes.php