Re: Using child classes/interfaces as desired type hints

On 07/Oct/10 8:56 AM, Nathan Nobbe wrote:

Hi, Probly rehashing an old conversation here, but I'm wondering why the following isn't supported <?php abstract class AbstractServer {} class ConcreteServer extends AbstractServer {} abstract class AbstractClient { abstract function doStuff(AbstractServer $o); } class ConcreteClient extends AbstractClient { function doStuff(ConcreteServer $o) {} } ?>

Here's the problem:

    class ConcreteServer2 extends AbstractServer
    {}

Now, ConcreteClient can't receive an instance of ConcreteServer2 as an argument, although the initial hint, AbstractServer would have allowed it. -- Ionuț G. Stan | http://igstan.ro