Description:
------------
To make PHP more object-oriented it would be useful to give primitives (Strings 
especially, as they have a large number of related functions) a more OO 
interface.

In the same way PHP5 introduced ArrayObject, it would be useful to create a 
StringObject in PHP6.

E.g. example usage:

<?php
//Some example usage
$str = 'Foo';
echo $str->toLower();
echo $str->replace('Foo', 'Bar');
echo $str->replace('Foo', 'Bar')->toLower(); //ideally needs inbuilt support for 
chaining
echo $str; //could be done using __toString()
?>

This can be achieved at the moment by defining a StringObject class and using 
$str = new String('My String'); or similar.  However, the usefulness is limited 
because there's no way to automatically wrap all strings within the application.