--TEST--
054: namespace and interfaces
--FILE--
<?php
namespace test\ns1;

class Foo implements \SplObserver {
    function update(\SplSubject $x) {
        echo "ok\n";
    }
}

class Bar implements \SplSubject {
    function attach(\SplObserver $x) {
        echo "ok\n";
    }
    function notify() {
    }
    function detach(\SplObserver $x) {
    }
}
$foo = new Foo();
$bar = new Bar();
$bar->attach($foo);
$foo->update($bar);
?>
--EXPECT--
ok
ok