{
public function __construct()
{
$this->sound = "Squeek Squeek";
}
}
class decoyDuck extends Duck
{
public function __construct()
{
$this->sound = "";
}
}
$darkwing = new Duck("Drake Mallard");
$darkwing->speak("I am the terror that flaps in the night.");
$bill = new rubberDuck("bad Brig");
$bill->speak("You're the one");
$decoy = new decoyDuck();
$decoy->speak("3...2...1...");
try {
$decoy->speak("");
} catch (Exception $ex) {
echo "failed";
}
echo "<br>";
// function add($x,$y){
// if(is_numeric($x)){
// if(is_numeric($y)){
// return $x + $y;
// } else {
// throw new Exception("Invalid Parameter: Must be number");
<?php
class Duck
{
private $name;
protected $sound;
public function __construct($name)
{
echo "I am alive";
$this->name = $name;
$this->sound = "UNKNOWN";
}
public function speak()
{
echo "I can speak " . $this->sound;
}
}
class rubberDuck extends Duck
{
public function __construct()
{
$this->sound = "Squeek Squeek";
}
}
$darkwing = new Duck("Drake Mallard");
$darkwing->speak();
$bill = new rubberDuck("bad Brig");
$bill->speak();
