note 89780 added to function.isset

$abc = 'test' $abc is not an array, but you can use the brackets to reach a single byte in the string using numbers. $abc[0] = 't' //first letter in 'test' $abc[1] = 'e' //second letter in 'test' $abc[2] = 's' //third letter in 'test' $abc[3] = 't' //fourth letter in 'test' When using $abc['astring'], php will cast any string to 0 (see type juggling) which result in the letter 't' which indeed is set. isset($abc['astring'] = isset($abc[0]) = true. ---- Server IP: 80.67.2.2 Probable Submitter: 85.230.110.75 ---- Manual Page -- http://www.php.net/manual/en/function.isset.php Edit -- https://master.php.net/note/edit/89780 Del: integrated -- https://master.php.net/note/delete/89780/integrated Del: useless -- https://master.php.net/note/delete/89780/useless Del: bad code -- https://master.php.net/note/delete/89780/bad+code Del: spam -- https://master.php.net/note/delete/89780/spam Del: non-english -- https://master.php.net/note/delete/89780/non-english Del: in docs -- https://master.php.net/note/delete/89780/in+docs Del: other reasons-- https://master.php.net/note/delete/89780 Reject -- https://master.php.net/note/reject/89780 Search -- https://master.php.net/manage/user-notes.php