Re: AW: [PHP-DEV] FILTER_VALIDATE_INT and +0/-0
----- Ursprüngliche Message -----
> Von: Gustavo Lopes <glopes@nebm.ist.utl.pt>
> An: 'Patrick Schaaf' <php@bof.de>; internals@lists.php.net; Frank Liepert
> <Frank.Liepert@gmx.de>
> CC: 'Derick Rethans' <derick@php.net>; 'Martin Jansen'
> <martin@divbyzero.net>
> Gesendet: 12:32 Montag, 4.Februar 2013
> Betreff: Re: AW: [PHP-DEV] FILTER_VALIDATE_INT and +0/-0
>
> 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).
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.
My ±0*2 cents here.
-- hakre
Thread (14 messages)