note 106494 added to function.isset

It is worth noting that in order to check for the existence of a key within an array, regardless of it's contents one should use array_key_exists() not isset(). isset() will (correctly) return false if the value of your array key is null, which may be a perfectly valid condition. ---- Server IP: 92.48.74.199 Probable Submitter: 212.159.100.176 ---- Manual Page -- http://www.php.net/manual/en/function.isset.php Edit -- https://master.php.net/note/edit/106494 Del: integrated -- https://master.php.net/note/delete/106494/integrated Del: useless -- https://master.php.net/note/delete/106494/useless Del: bad code -- https://master.php.net/note/delete/106494/bad+code Del: spam -- https://master.php.net/note/delete/106494/spam Del: non-english -- https://master.php.net/note/delete/106494/non-english Del: in docs -- https://master.php.net/note/delete/106494/in+docs Del: other reasons-- https://master.php.net/note/delete/106494 Reject -- https://master.php.net/note/reject/106494 Search -- https://master.php.net/manage/user-notes.php