allow_call_time_pass_reference

I am wondering what should happen to the allow_call_time_pass_reference php.ini directive. The following code, for instance, prints no warning with PHP 5 but with PHP 4. <?php error_reporting(E_ALL); class Foo { function bar($foobar) {} } $a = new Foo; $b = new Foo; $a->bar(&$b); ?> I think the allow_call_time_pass_reference directive should be removed as it is no longer needed.