gistfile1.aw

<?php

------ Symfony2 API ---------------

interface UserInterface
{
    // ...

    public function equals(UserInterface $user);
}


------ Propel API ---------------

abstract class BaseObject
{
    public function equals($obj)
    {
        // ...
    }
}


------ My Propel Model Classes in My Symfony2 Bundle ---------------

class MyPropelUser extends BaseMyPropelUser implements UserInterface
{
    // Conflict because BaseObject::equals() and UserInterface::equals() methods
    // don't have the same signature.
}

Now I get it...

And of course it doesn't work if MyPropelUser::equals() signature is UserInterface $obj?

So I'm a bit fucked up now ^^

No it does not work... You must respect the BaseObject::equals() method... That's why I want method overloading in PHP.

I encountered the same problem a few months ago, http://groups.google.com/group/symfony-users/browse_thread/thread/2eac5aeb5fcc5131?hl=en. For now i just create 'Proxy class' as suggested by willdurand.