note 80842 added to function.posix-getpgid

posix_getpgid() returns NULL if the given pid doesn't exist and can therefore be used to determine if a particular pid refers to an existing process. Beware, however, that pids are recycled so this method can result in false positives. ---- Server IP: 209.41.74.194 Probable Submitter: 64.105.91.114 ---- Manual Page -- http://www.php.net/manual/en/function.posix-getpgid.php Edit -- https://master.php.net/note/edit/80842 Del: integrated -- https://master.php.net/note/delete/80842/integrated Del: useless -- https://master.php.net/note/delete/80842/useless Del: bad code -- https://master.php.net/note/delete/80842/bad+code Del: spam -- https://master.php.net/note/delete/80842/spam Del: non-english -- https://master.php.net/note/delete/80842/non-english Del: in docs -- https://master.php.net/note/delete/80842/in+docs Del: other reasons-- https://master.php.net/note/delete/80842 Reject -- https://master.php.net/note/reject/80842 Search -- https://master.php.net/manage/user-notes.php