{
public $firstName;
public $lastName;
public function __construct($firstName, $lastName)
{
$this->firstName = $firstName;
$this->lastName = $lastName;
}
public function fullName()
{
return $this->firstName . ' ' . $this->lastName;
}
}
class Superhero extends Person
{
public $pseudonym;
public $capeColor;
public function alterEgo()
{
return 'Top Secret Alternate Ego: ' . $this->fullName();
}
public function hasCape()
{
return !empty($this->capeColor);
}
}
$superman = new Superhero('Clark', 'Kent');
$superman->pseudonym = 'Superman';
$superman->capeColor = 'Red';
echo $superman->fullName();
echo $superman->alterEgo();
