If I specify to new an object instance variabe as class name of another
object it gives me the error below.  Try the script below under PHP 3.  PHP
4 does not have this problem.

Fatal error:  Object is not a class in test.php on line 10

<?
class some_class
{
 var $variable="some_class";
};

$object=new some_class;
$variable=$object->variable;
$another_object=new $variable;
$another_object=new $object->variable;

?>