Person.php

class Person
{
    private $name;
	
    public function __construct()
    {
        $this->name = "Unknown";
    }

    public function setName($name)
    {
        $this->name = $name;
    }

    public function getName()
    {
        return $this->name;
    }
}

index.php

$person = new Person();
echo $person->getName(); // Outputs "Unknown".

$person->setName("James");
echo $person->getName(); // Outputs "James".