This is my third (and last, for now) enhancement request.  Please be patient with me - I am an ardent PHP fan.

The single biggest thing I would like to see for strings is to be able to provide a negative index, where $str{-1} means the last character, $str{-2} the penultimate character and so on down to $str[0] === $str[-strlen($str)]

It's just a convenince thing since I can already get there using substr or slice - it would just be a more compact way of writing it.

       Regards to the PHP team,
               Csaba Gabor