symfony2实体上的PHP多重继承。 正确的方法

I have 2 Abstract classes: AbstractCommentable (methods for comments) and AbstractImaging (entity methods for manage images).

Some classes already have:

class Trip extends AbstractImaging {/** some stuff **/}
class Marker extends AbstractImaging {/** some stuff **/}
class Gastronomy extends AbstractImaging {/** some stuff **/}

But I want to add AbstractCommentable to this classes...

What's the right way to do that?

You either have to make AbstractImaging already extend AbstractCommentable or other way around ... which i suggest you don't want.

Multiple inheritance can only be linear in PHP because of possible conflicts.

You can't do something like ...

class Whatever extends AbstractImaging, AbstractCommentable

The easy way:

If you're using php 5.4+ you could use a trait to add the CommentableInterface methods to your entity.

The complicated way:

create an annotation and let a doctrine-listener create a proxy class adding the commentable methods.