php5類中三種資料類型的區別

/** * parent　只能調用父類中的公有或受保護的方法，不能調用父類中的屬性 * self 　可以調用父類中除私人類型的方法和屬性外的所有資料 */ class User{ public $name; private $passwd; protected $email; public function __construct(){ //print __CLASS__." "; $this->name= 'simple'; $this->passwd='123456'; $this->email = 'test123@163.com'; } public function show(){ print "good "; } public function inUserClassPublic() { print __CLASS__.'::'.__FUNCTION__." "; } protected function inUserClassProtected(){ print __CLASS__.'::'.__FUNCTION__." "; } private function inUserClassPrivate(){ print __CLASS__.'::'.__FUNCTION__." "; } } class simpleUser extends User { public function __construct(){ //print __CLASS__." "; parent::__construct(); } public function show(){ print $this->name."//public "; print $this->passwd."//private "; print $this->email."//protected "; } public function inSimpleUserClassPublic() { print __CLASS__.'::'.__FUNCTION__." "; } protected function inSimpleUserClassProtected(){ print __CLASS__.'::'.__FUNCTION__." "; } private function inSimpleUserClassPrivate() { print __CLASS__.'::'.__FUNCTION__." "; } } class adminUser extends simpleUser { protected $admin_user; public function __construct(){ //print __CLASS__." "; parent::__construct(); } public function inAdminUserClassPublic(){ print __CLASS__.'::'.__FUNCTION__." "; } protected function inAdminUserClassProtected(){ print __CLASS__.'::'.__FUNCTION__." "; } private function inAdminUserClassPrivate(){ print __CLASS__.'::'.__FUNCTION__." "; } } class administrator extends adminUser { public function __construct(){ parent::__construct(); } } /** * 在類的執行個體中 只有公有屬性和方法才可以通過執行個體化來調用 */ $s = new administrator(); print '-------------------'; $s->show(); ?> 複製代碼

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