__toString extension proposal

Hi, there is one issue that I experience since I started using 5.2.0 and especially the new correct __toString behaviour. Generally it works fine. But sometimes I find it useful to get __toString return another object the also has a __toString method. So my idea is - is it possible (and good idea) to make it work in this extended manner. Here is an example to illustrate what I mean: class test1 { function __toString() { return 'i am class 1'; } } class test2 { function __toString() { return new test1; } } $test = new test2; echo $test;