How to access a class property that is of type object in PHP?

Question

I know how to access an object's property if the property type is a simple string

class My_Class {
    public $var = 'Hello';

    // More stuff...
}

$obj = new My_Class();
echo $obj->var

But imagine if My_Class::var was type object which itself had properties. How would I access one of those properties?

Answer 1

只需像下面这样继续沿着链条工作：

$obj->var->property_name;

Answer 2

The same way you'd access a regular object but working through the instance of the container class. For example:

$obj->var->some_method() or $obj->var->some_public_property;