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<!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>