note 124358 added to datetime.sub

CAUTION: Never subtract months from the current day, always do so from the 1st of the month. Let us imagine that it is May 31, 2019, so 2019-05-31, the function will not give 2019-04-31 because April is not 31 days old but 30, it will create problems. ---- Server IP: 208.43.231.9 Probable Submitter: 185.85.3.168 (proxied: 80.15.41.4) ---- Manual Page -- http://php.net/manual/en/datetime.sub.php Edit -- https://master.php.net/note/edit/124358 Del: integrated -- https://master.php.net/note/delete/124358/integrated Del: useless -- https://master.php.net/note/delete/124358/useless Del: bad code -- https://master.php.net/note/delete/124358/bad+code Del: spam -- https://master.php.net/note/delete/124358/spam Del: non-english -- https://master.php.net/note/delete/124358/non-english Del: in docs -- https://master.php.net/note/delete/124358/in+docs Del: other reasons-- https://master.php.net/note/delete/124358 Reject -- https://master.php.net/note/reject/124358 Search -- https://master.php.net/manage/user-notes.php