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<?
class Vehicle {
var $model;
var $current_speed;
function setSpeed($mph) {
$this->current_speed = $mph;
}
function getSpeed() {
return $this->current_speed;
}
}
class Auto extends Vehicle {
var $fuel_type;
function setFuelType($fuel) {
$this->fuel_type = $fuel;
}
function getFuelType() {
return $this->fuel_type;
}
}
class Airplane extends Vehicle {
var $wingspan;
function setWingSpan($wingspan) {
$this->wingspan = $wingspan;
}
function getWingSpan() {
return $this->wingspan;
}
}
?>
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