note 123776 added to features.gc.refcounting-basics

my php version is PHP 7.1.6 (cli), when I run $a = 'new string'; $b = 1; xdebug_debug_zval('a'); xdebug_debug_zval('b'); it shows: a: (refcount=0, is_ref=0)='new string' b: (refcount=0, is_ref=0)=1 ---- Server IP: 208.43.231.9 Probable Submitter: 119.81.81.244 (proxied: 101.198.192.11) ---- Manual Page -- http://php.net/manual/en/features.gc.refcounting-basics.php Edit -- https://master.php.net/note/edit/123776 Del: integrated -- https://master.php.net/note/delete/123776/integrated Del: useless -- https://master.php.net/note/delete/123776/useless Del: bad code -- https://master.php.net/note/delete/123776/bad+code Del: spam -- https://master.php.net/note/delete/123776/spam Del: non-english -- https://master.php.net/note/delete/123776/non-english Del: in docs -- https://master.php.net/note/delete/123776/in+docs Del: other reasons-- https://master.php.net/note/delete/123776 Reject -- https://master.php.net/note/reject/123776 Search -- https://master.php.net/manage/user-notes.php