访问数组中的受保护对象

Question

访问body的正确语法是什么，因为这些对象不是数组，父对象是node：protected

 CourseObjectContent Object
    (
        [node:protected] => stdClass Object
            (
                [nid] => 9397
                [type] => book
                [language] => 
                [uid] => 1
                [status] => 1
                [created] => 1364217732
                [changed] => 1367581312
                [comment] => 0
                [promote] => 0
                [moderate] => 0
                [sticky] => 0
                [tnid] => 0
                [translate] => 0
                [vid] => 9406
                [revision_uid] => 1
                [title] => title text
                [body] => "body text"
    }

Answer 1

类的受保护（和Private相同）成员/属性/变量不能直接在类外访问，也不能由类Object直接访问。因此，您需要为此编写一个类成员函数来访问该类的受保护对象数组

class CourseObjectContent {
    protected $node;

    //member function to access 'protected' members of class
    function accessObjectArray(){
        //TODO:Your code to access protected object array
    }
    //other member functions
}

Answer 2

您必须在对象的类中编写一个函数来返回'body'值。只有属于同一个类的函数才能访问该类的受保护值。