-
-
/** - * 定义与使用php抽象类
- * edit: bbs.it-home.org
- */
- abstract class Number {
- private $value;
- abstract public function value();
- public function reset() {
- $this->value = NULL;
- }
- }
class Integer extends Number { - private $value;
- public function value() {
- return (int)$this->value;
- }
- }
$num = new Integer; /* Okay */ - $num2 = new Number; /* This will fail */
- ?>
-
|
本網站聲明
本文內容由網友自願投稿，版權歸原作者所有。本站不承擔相應的法律責任。如發現涉嫌抄襲或侵權的內容，請聯絡admin@php.cn
作者最新文章
-
2024-10-22 09:46:29
-
2024-10-13 13:53:41
-
2024-10-12 12:15:51
-
2024-10-11 22:47:31
-
2024-10-11 19:36:51
-
2024-10-11 15:50:41
-
2024-10-11 15:07:41
-
2024-10-11 14:21:21
-
2024-10-11 12:59:11
-
2024-10-11 12:17:31
