W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
<!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}。"; } } class Strawberry extends Fruit { public $weight; public function __construct($name, $color, $weight) { $this->name = $name; $this->color = $color; $this->weight = $weight; } public function intro() { echo "水果是 {$this->name}，颜色是 {$this->color}，重量是 {$this->weight} 克。"; } } $strawberry = new Strawberry("草莓", "红色", 50); $strawberry->intro(); ?> </body> </html>