Extend class and override methods in PHP

<?php/*from  w w w  .j  a va2 s  . c  o  m*/

class Fruit {
  public function peel() {
    echo "<p>I'm peeling the fruit...</p>";
  }

  public function slice() {
    echo "<p>I'm slicing the fruit...</p>";
  }

  public function eat() {
    echo "<p>I'm eating the fruit. Yummy!</p>";
  }

  public function consume() {
    $this->peel();
    $this->slice();
    $this->eat();
  }
}

class Grape extends Fruit {
  public function peel() {
    echo "<p>No need to peel a grape!</p>";
  }

  public function slice() {
    echo "<p>No need to slice a grape!</p>";
  }
}

echo "<h2>Consuming an apple...</h2>";
$apple = new Fruit;
$apple->consume();

echo "<h2>Consuming a grape...</h2>";
$grape = new Grape;
$grape->consume();

?>