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Date: Fri, 8 Feb 2013 19:04:35 +0000 (GMT)
Reply-To: hakre <hanskrentel@yahoo.de>
To: Gustavo Lopes <glopes@nebm.ist.utl.pt>, 'Patrick Schaaf' <php@bof.de>,
  "internals@lists.php.net" <internals@lists.php.net>,
  Frank Liepert <Frank.Liepert@gmx.de>
Cc: 'Derick Rethans' <derick@php.net>, 'Martin Jansen' <martin@divbyzero.net>
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Subject: Re: AW: [PHP-DEV] FILTER_VALIDATE_INT and +0/-0
From: hanskrentel@yahoo.de (hakre)

----- Urspr=FCngliche Message -----=0A=0A> Von: Gustavo Lopes <glopes@nebm.=
ist.utl.pt>=0A> An: 'Patrick Schaaf' <php@bof.de>; internals@lists.php.net;=
 Frank Liepert <Frank.Liepert@gmx.de>=0A> CC: 'Derick Rethans' <derick@php.=
net>; 'Martin Jansen' <martin@divbyzero.net>=0A> Gesendet: 12:32 Montag, 4.=
Februar 2013=0A> Betreff: Re: AW: [PHP-DEV] FILTER_VALIDATE_INT and +0/-0=
=0A> =0A> So the question is only whether "+0" or "-0" (or =0A> "+0", etc.)=
 should be accepted as integers by FILTER_VALIDATE_INT. I =0A> think they s=
hould, because we also accept non-canonical inputs such as =0A> "+5", i.e.,=
 we always accept a sign. It's true that 0 is neither =0A> positive or nega=
tive, but I don't think "accepts a leading sign, except =0A> if it's 0" is =
a good option. It's an unnecessary special case.=0A=0AA special case still =
left is "=B10". It is with the 'PLUS-MINUS SIGN' (U+00B1).=0A=0AIt's an equ=
ally incorrect sign for the number 0 as "-" or "+" is incorrect. Available =
in internet standards ISO-8859-1 and more as "\xB1"=A0 (UTF-8 as "\xC2\xB1"=
), FILTER_VALIDATE_INT should reflect hidden dependency of input encoding h=
ere.=0A=0AMy =B10*2 cents here.=0A=0A-- hakre=0A