How to return the state of an object?

Question

PHP

Explain with examples
Simple class

class Example {

    public $variable;

    public function foo() {

        //some code

    }

}

His object

$obj = new Example();
$obj->variable = "Переменная";

Some method that takes an object of the Example class as an argument

//some code

public function method(Example $obj) {

    //some code

}

//some code

How to pass the Example object to method(Example $obj) with the state that we got after working with this object (in our case, so that the $obj->variable property already contains the value "Variable"?

Answer 1

$obj = new Example();
$obj->variable = "Переменная";

$anotherobj = new AnotherObj;
$anotherobj->method($obj);

So, no?

Answer 2

If you are not sure, you can explicitly specify the transfer of an object by reference

$obj = new Example();
$obj->variable = "Переменная";

$anotherobj = new AnotherObj;
$anotherobj->method(&$obj);