note 101766 added to function.is-numeric

The documentation does not clarify what happens if you the input is an empty string - it correctly returns false in my experience. Useful to state these odd cases, for when you see code that checks for an empty string and is_numeric, you can tell it's a waste of a comparison. ---- Server IP: 69.147.83.197 Probable Submitter: 84.45.227.127 ---- Manual Page -- http://www.php.net/manual/en/function.is-numeric.php Edit -- https://master.php.net/note/edit/101766 Del: integrated -- https://master.php.net/note/delete/101766/integrated Del: useless -- https://master.php.net/note/delete/101766/useless Del: bad code -- https://master.php.net/note/delete/101766/bad+code Del: spam -- https://master.php.net/note/delete/101766/spam Del: non-english -- https://master.php.net/note/delete/101766/non-english Del: in docs -- https://master.php.net/note/delete/101766/in+docs Del: other reasons-- https://master.php.net/note/delete/101766 Reject -- https://master.php.net/note/reject/101766 Search -- https://master.php.net/manage/user-notes.php