Does PHP have an equivalent of JavaScript's prototype object?

Basically, I want to add default methods to the PHP string object so
that I can do something like:

$stringvar = "hello";

$stringvar -> append(" world"); // where append is some kind of
prototyped function i define

echo $stringvar; // "hello world"

is this at all possible?

thanks!!
Received on Mon Nov 21 03:02:04 2005