Ereditarietà metodo magico __toString

[whisher]

class Foo { 
    public function __toString() { 
                        
      return  implode(get_object_vars($this)); 
    } 
} 

class Bar extends Foo { 
    public $one = 'One';
    protected $two = 'Two';
    private $three = 'Three';
} 

$b = new Bar(); 
echo $b; 

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