Declare a class in a class

Is it possible to declare a class in another class?, like:

Code:

---

class FirstClass {
  class SecondClass {
    public $fName;
    public $lName;
    public $age;
  }

  ...some code
}

---

I seem to remember doing this in PHP4 but I do not get it to work in PHP5.
The reason I want to do it it to send around parameters in a nice way in the class (FirstClass). I could use an array but its nicer to use a class when coding in an IDE since it auto completes the variable names in the class when using an object.

I have been seaching for an answer but not found much, maybe since it's hard to search for "class in class".

You'll get more results if you search for "nested class". It is not possible in PHP 5. I can't remember for sure but it might have been promised for PHP 6.

Nice, thanks for the answer.