- <?php
- class Human {
- public $age = 22;
- public function __clone() {
- echo ‘有人克隆我!假冒‘;
- }
- }
- $lisi = new Human();
- $zhangsan = clone $lisi;
-
- ?>
- <?php
-
- class Human {
- private $money = ‘30两‘;
- protected $age = 23;
- public $name = ‘lily‘;
- public function __get($p) {
- echo ‘你想访问我的‘,$p,‘属性<br/>‘;
- }
- }
- $lily = new Human();
- echo $lily->age;
- echo $lily->money;
- echo $lily->friend;
- echo ‘<br />‘;
-
- $lily->aaa = 111;
- $lily->bbb = 222;
- print_r($lily);
-
-
-
- ?>
- <p><?php
- class Stu {
- private $money = ‘30两‘;
- protected $age = 23;
- public $name = ‘Hmm‘;
- public function __set($a,$b) {
- echo ‘你想设置我的‘,$a,‘属性‘,‘<br />‘;
- echo ‘且值是‘,$b,‘<br />‘;
- }
- }
- echo ‘<hr />‘;
- $hmm = new Stu();
- $hmm->aaa = 111;
- $hmm->money = ‘40两‘;
- $hmm->age = ‘28‘;
- print_r($hmm);
- $hmm->name = ‘HanMM‘;
- print_r($hmm);
- <?php
- echo ‘<hr />‘;
- class Dog {
- public $leg = 4;
- protected $bone = ‘猪腿骨‘;
- public function __isset($p) {
- echo ‘你想判断我的‘,$p,‘属性存不存在<br />‘;
- return 1;
- }
- public function __unset($p) {
- echo ‘你想去掉我的‘,$p,‘?!<br />‘;
- }
- }
- $hua = new Dog();
- if(isset($hua->leg)) {
- echo $hua->leg,‘<br/>‘;
- }
- if(isset($hua->tail)) {
- echo ‘有tail属性‘;
- } else {
- echo ‘没有tail‘;
- }
-
- echo ‘<hr />‘;
- echo ‘__unset测试<br/>‘;
- print_r($hua);
- unset($hua->leg);
- print_r($hua);
- unset($hua->tail);
- unset($hua->bone);
- ?>
PHP 魔术方法之__set__get__unset__isset
原文:http://www.cnblogs.com/aipiaoborensheng/p/5563003.html