note 126108 added to datetime.modify

Beware, the modify function does not treat .5 as a half minute! echo "start with: $str\n"; $datetimeObj = new DateTime($str); $datetimeObj->modify('1 minutes'); echo "add 1 min: ".$datetimeObj->format('m/d/Y h:i:s A')."\n"; $datetimeObj = new DateTime($str); $datetimeObj->modify('.5 minutes'); echo "add .5 min: ".$datetimeObj->format('m/d/Y h:i:s A')."\n"; $datetimeObj->modify('.53453531 minutes'); echo "add .53453531 min: ".$datetimeObj->format('m/d/Y h:i:s A')."\n"; start with: 05/25/2021 02:53:40 PM add 1 min: 05/25/2021 02:54:40 PM add .5 min: 05/25/2021 02:58:40 PM add .53453531 min: 01/12/2123 03:09:40 AM .5 minutes actually ends up adding 5 minutes, not a half minute, and .53453531 adds 53453531 minutes. So, if you have a function that accepts a number for adding minutes to a datetime, you have to check for < 1 and > -1, and then possibly convert that to seconds and do a seconds modification. ---- Server IP: 45.112.84.4 Probable Submitter: 45.112.85.242 (proxied: 173.89.21.234) ---- Manual Page -- https://php.net/manual/en/datetime.modify.php Edit -- https://main.php.net/note/edit/126108 Del: integrated -- https://main.php.net/note/delete/126108/integrated Del: useless -- https://main.php.net/note/delete/126108/useless Del: bad code -- https://main.php.net/note/delete/126108/bad+code Del: spam -- https://main.php.net/note/delete/126108/spam Del: non-english -- https://main.php.net/note/delete/126108/non-english Del: in docs -- https://main.php.net/note/delete/126108/in+docs Del: other reasons-- https://main.php.net/note/delete/126108 Reject -- https://main.php.net/note/reject/126108 Search -- https://main.php.net/manage/user-notes.php