<?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);
