2011/6/20 Johannes Schlüter <johan...@schlueters.de> > On Mon, 2011-06-20 at 17:49 +0200, Robert Eisele wrote: > > 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 > be > > explained that -1 is an element and not the end of the chained list > behind > > the HT. > > Yes. So having this in the current form accepted means that > > $a[-1]; > > can have two meanings: > > 1) Get the last item (byte in a string) > 2) Get item `-1` (in an array) >
Yes, sure. But if this feature is documented well, I can't see any problems with this, especially if the trend goes towards a more typed language where the user knows about the used data-type. > Which are to different things. > > Currently we treat > > $a{$o} and $a[$o] > > as equal. My suggestion was to split this up to avoid the conflict from > above. I didn't suggest adding support for $a[-1] as last element for > arrays, I know quite well why this won't make sense. > I know about the equality of the two bracket forms. But I read somewhere that the trend goes towards [] - and maybe it was something from you. > > johannes > > > 2011/6/20 Johannes Schlüter <johan...@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 > if > > > 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 = array(-1 => "foo", 2 => "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 > > > > > > > > > > > >