note 125654 added to language.types.null

Note that if you do math on NULL, it will behave like 0. echo 1 + NULL; // 0 $n = NULL; $n++; echo $n; // 1 But wait -- it gets better. It works even if the variable doesn't exist: unset($n); $n++; echo $n; // 1 ---- Server IP: 45.112.84.4 Probable Submitter: 45.91.159.165 (proxied: 87.214.92.26) ---- Manual Page -- http://php.net/manual/en/language.types.null.php Edit -- https://master.php.net/note/edit/125654 Del: integrated -- https://master.php.net/note/delete/125654/integrated Del: useless -- https://master.php.net/note/delete/125654/useless Del: bad code -- https://master.php.net/note/delete/125654/bad+code Del: spam -- https://master.php.net/note/delete/125654/spam Del: non-english -- https://master.php.net/note/delete/125654/non-english Del: in docs -- https://master.php.net/note/delete/125654/in+docs Del: other reasons-- https://master.php.net/note/delete/125654 Reject -- https://master.php.net/note/reject/125654 Search -- https://master.php.net/manage/user-notes.php