Description:
------------
i can understand this error from inside a class

class Foo{
  function bar(){
    $this =& $something_else;
  }
}

but i should think one can assign a ref to $this to another var.
class Foo{
  function bar(){
    $this_dupe =& $this; //fails to compile
    $this_dupe = $this; //compiles okay
  }
}
 
the reason i bring this up, is in php4 and 5.0 this is allowed .. if code needs to run on php4 without silly performance hits (i.e. data copy on assignment), would be nice to keep that.

from the error it seems it is trying to do this
$this =& $this_dupe .. but that is not what is being done


Reproduce code:
---------------
<?php
class Foo{
  function bar(){
    $this_dupe =& $this; //fails to compile
    $this_dupe = $this; //works a okay
  }
}

Expected result:
----------------
hopefully it should compile fine

Actual result:
--------------
Fatal error: Cannot re-assign $this in {test.php} on line 4