W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
<!DOCTYPE html> <html> <body> <?php class domain { protected static function getWebsiteName() { return "W3School.com.cn"; } } class domainW3 extends domain { public $websiteName; public function __construct() { $this -> websiteName = parent::getWebsiteName(); } } $domainW3 = new domainW3; echo $domainW3 -> websiteName; ?> </body> </html>