​x
 
<!DOCTYPE html>
<html>
<body>
​
<?php
class Fruit {
  public $name;
  public $color;
  public function __construct($name, $color) {
    $this->name = $name;
    $this->color = $color; 
  }
  public function intro() {
    echo "水果是 {$this->name}，颜色是 {$this->color}。"; 
  }
}
​
// Strawberry 继承自 Fruit
class Strawberry extends Fruit {
  public function message() {
    echo "我是水果还是浆果？ "; 
  }
}
​
$strawberry = new Strawberry("草莓", "红色");
$strawberry->message();
$strawberry->intro();
?>
 
</body>
</html>