note 72975 added to function.unset

On my website I use the following to create a sessionvar: $_session["test"] = array(1,2,3,4,5); If I try to delete it with: unset($_session["test"]); It now seems that $_session["test"] is deleted, but if I do the following: $_session["test"][1]=3; $_session["test"] becomes [1,3,3,4,5]! Any suggestions? Is it a good aproach to set $_session["test"] = false ? ---- Server IP: 69.147.83.197 Probable Submitter: 129.241.206.134 ---- Manual Page -- http://www.php.net/manual/en/function.unset.php Edit -- https://master.php.net/note/edit/72975 Del: integrated -- https://master.php.net/note/delete/72975/integrated Del: useless -- https://master.php.net/note/delete/72975/useless Del: bad code -- https://master.php.net/note/delete/72975/bad+code Del: spam -- https://master.php.net/note/delete/72975/spam Del: non-english -- https://master.php.net/note/delete/72975/non-english Del: in docs -- https://master.php.net/note/delete/72975/in+docs Del: other reasons-- https://master.php.net/note/delete/72975 Reject -- https://master.php.net/note/reject/72975 Search -- https://master.php.net/manage/user-notes.php