note 125268 added to features.gc.collecting-cycles

In step B, the algorithm runs a depth-first search on all possible roots to decrease by one the refcounts of each zval it finds, making sure not to decrease a refcount on the same zval twice (by marking them as "grey") 为了防止同一个zval紫色变量删除2次，每删除一次，就标记为灰色。 ---- Server IP: 45.112.84.4 Probable Submitter: 103.51.166.36 (proxied: 103.206.191.78) ---- Manual Page -- http://php.net/manual/en/features.gc.collecting-cycles.php Edit -- https://master.php.net/note/edit/125268 Del: integrated -- https://master.php.net/note/delete/125268/integrated Del: useless -- https://master.php.net/note/delete/125268/useless Del: bad code -- https://master.php.net/note/delete/125268/bad+code Del: spam -- https://master.php.net/note/delete/125268/spam Del: non-english -- https://master.php.net/note/delete/125268/non-english Del: in docs -- https://master.php.net/note/delete/125268/in+docs Del: other reasons-- https://master.php.net/note/delete/125268 Reject -- https://master.php.net/note/reject/125268 Search -- https://master.php.net/manage/user-notes.php