On Fri, 08 Feb 2013 20:04:35 +0100, hakre <hanskren...@yahoo.de> wrote:
----- Ursprüngliche Message -----
Von: Gustavo Lopes <glo...@nebm.ist.utl.pt>
So the question is only whether "+0" or "-0" (or
"+0", etc.) should be accepted as integers by FILTER_VALIDATE_INT. I
think they should, because we also accept non-canonical inputs such as
"+5", i.e., we always accept a sign. It's true that 0 is neither
positive or negative, but I don't think "accepts a leading sign, except
if it's 0" is a good option. It's an unnecessary special case.
A special case still left is "±0". It is with the 'PLUS-MINUS SIGN'
(U+00B1).
By special case, I meant a deviation to the general rule on how the code
handles the input. The code handles the characters 0-9 prefixed by an
optional sign. The PLUS-MINUS SIGN -- or, for that matter, all the other
numeric characters in the Unicode repertoire -- are irrelevant.
It's an equally incorrect sign for the number 0 as "-" or "+" is
incorrect. Available in internet standards ISO-8859-1 and more as
"\xB1" (UTF-8 as "\xC2\xB1"), FILTER_VALIDATE_INT should reflect hidden
dependency of input encoding here.
I'm not sure what you're arguing for here.
--
Gustavo Lopes
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