note 108989 added to function.is-numeric

In response to holdoffhunger at gmail dot com I was half way through optimizing your function when I found about ctype_xdigit function. This function exactly does that -- it checks for character(s) representing a hexadecimal digit! ---- Server IP: 69.147.83.197 Probable Submitter: 109.110.180.87 ---- Manual Page -- http://www.php.net/manual/en/function.is-numeric.php Edit -- https://master.php.net/note/edit/108989 Del: integrated -- https://master.php.net/note/delete/108989/integrated Del: useless -- https://master.php.net/note/delete/108989/useless Del: bad code -- https://master.php.net/note/delete/108989/bad+code Del: spam -- https://master.php.net/note/delete/108989/spam Del: non-english -- https://master.php.net/note/delete/108989/non-english Del: in docs -- https://master.php.net/note/delete/108989/in+docs Del: other reasons-- https://master.php.net/note/delete/108989 Reject -- https://master.php.net/note/reject/108989 Search -- https://master.php.net/manage/user-notes.php