访问类属性

Question

如何从类A中实例化的对象访问类A的属性。

喜欢这个;

class A()
public var1;
public obj1;

function __construct(){
  $this->var1 = 'Hello World';
  $this->obj1 = new B();
}

==============

class B()

function anything(){
   #i want to access var1 from the calling class here ????
   # how do i access var1 in the calling class
}

Answer 1

没有直接的方法可以做到这一点。依赖注入是一种可能性：

class B {

    protected $A = null;

    public function __construct($A) {
        $this->A = $A;
    }

    public function foo() {
        $this->A->var1;
    }

}

class A {

    public function __construct() {
        $this->obj1 = new B($this);
    }

}