后期静态绑定|而不用`static`关键字修改父类

问题描述

我有以下父级和子级.

class Parent_class {

    protected static function method_one() {
        echo "I am in Parent_class in method_one";
    }

    protected function execute() {
        static::method_one();
    }

    public function start() {
        $this->execute();
    }

}

class Child_class extends Parent_class {

    protected static function method_one() {
        echo "I am in Child_class in method_one";
    }

}

$obj = new Child_class();
$obj->start();

---

Result - it is calling Child class method.

结果如预期的那样，因为php5.3中已保留关键字static支持静态后期绑定.

The result is as expected because of static late binding is supported in php5.3 with the already reserved keyword static.

但是问题是，我没有对Parent类的写权限，因此调用methode_one时不能使用static，因此它没有执行后期静态绑定.

But the issue is, I do not have write access to Parent class, hence I can not use static while calling methode_one and hence it is not performing late static binding.

有什么方法可以访问覆盖方法吗?

Is there any way out using which I can access overriding method ?

父类是已定义的库，我无法对其进行修改.

Parent class is a defined library, and I can not modify it.

解决方法是修改父类或完全放弃这种想法，但是您可以建议其他替代方法吗?

Way out is to modify the parent class or drop this thought completely, but can you suggest any other alternative ?

推荐答案

为什么不在子类中实现执行或启动?

Why not implement execute or start in child class?

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