The problem is not located at the interface, but the problem is because of your generic implementation using static methods and properties.

问题不是位于界面，但问题是因你的通用实现使用静态方法和属性。

youdao

But with PHP V5.3, I'm happy to have lots of static - such as the static properties and methods in an inheritance tree.

但是对于PHP V5.3，我很高兴拥有很多静态的东西—比如继承树内的静态属性和方法。

youdao

Rather, static crosscutting allows you to alter the structure of an object by introducing additional methods, fields, and properties.

相反，它允许通过引入附加的方法字段和属性来修改对象的 结构。

youdao