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Date: Mon, 20 Jun 2011 17:49:14 +0200
Message-ID: <BANLkTimQTa+3+uUB7xcR_c66myiBs0yOWA@mail.gmail.com>
To: =?ISO-8859-1?Q?Johannes_Schl=FCter?= <johannes@schlueters.de>
Cc: Etienne Kneuss <colder@php.net>, Derick Rethans <derick@php.net>, internals@lists.php.net
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Subject: Re: [PHP-DEV] Negative string offsets
From: robert@xarg.org (Robert Eisele)

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I would not consider this for arrays and objects, too. If we had real
arrays, this would make sense but they are HT's and therewith it can also b=
e
explained that -1 is an element and not the end of the chained list behind
the HT.

2011/6/20 Johannes Schl=FCter <johannes@schlueters.de>

> On Mon, 2011-06-20 at 16:31 +0200, Etienne Kneuss wrote:
> > >> Negative string offsets is a wish and also an implementation of my
> running
> > >> PHP version for long. It operates in the same fashion like substr()
> with
> > >> negative offsets, but avoids the function call and is much smarter i=
f
> one
> > >> single character has to be extracted:
>
> > Do you mean ArrayObject? ArrayAccess is the interface.
> > Regardless, I don't believe it makes sense to change the semantics of
> > those indexes for arrays, since arrays can define negative indexes.
> > i.e. $a =3D array(-1 =3D> "foo", 2 =3D> "bar"); $a[-1] should really be
> > "foo", and not "bar".
>
> This clearly shows the inconsistency this brings. Maybe $var{$offset}
> should be clearly deprecated for arrays and $var[$offset] for strings as
> in PHP they work differently.
>
> johannes
>
>
>

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