Hi, On Mon, Jun 20, 2011 at 14:05, Derick Rethans <der...@php.net> wrote: > On Mon, 20 Jun 2011, Robert Eisele 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: >> >> $str = "Hallo"; >> >> $str[0] == "H" >> $str[-1] == "o"; >> >> If -6 is used as offset, the old warning is displayed because it's the first >> undefined negative offset. >> >> The same thing for setting: >> >> $str[-1] = '0'; >> $str[-4] = "4"; >> >> will result in "H4ll0" >> >> Would be glad to see this in 5.4 > > Sounds like a good addition to me! For ArrayAccess, would this calculate > the "correct" index so that current implementations of ArrayAccess don't > have to be changed?
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 looks useful for strings though! > > cheers, > Derick > > -- > http://derickrethans.nl | http://xdebug.org > Like Xdebug? Consider a donation: http://xdebug.org/donate.php > twitter: @derickr and @xdebug > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > > -- Etienne Kneuss http://www.colder.ch -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
