In the previous section, we learned how to disable overriding. I used the final keyword before the accessor of the method that would prevent overriding Using final when declaring a class prevents inheritance.
final class class name{}
So let's look at an example.
<?php
final class GoogleCar
{
}
class Car extends GoogleCar
{
public function hello()
{
return 'hello';
}
}
$ever = new Car;
echo $ever->hello();
?>
The code above does not allow you to inherit GoogleCar using final.
But Car class is inheriting.
So I get an error
Result of the code above
Result
Clearing final in the code above allows inheritance, so no error occurs.
<?php
class GoogleCar
{
}
class Car extends GoogleCar
{
public function hello()
{
return 'hello';
}
}
$ever = new Car;
echo $ever->hello();
?>
Result
Thank you.