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php5类中三种数据类型的区别

时间：2021-07-01 10:21:17 帮助过：39人阅读

/**
* parent　只能调用父类中的公有或受保护的方法，不能调用父类中的属性
* self 　可以调用父类中除私有类型的方法和属性外的所有数据
*/
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();
}
}
/**
* 在类的实例中只有公有属性和方法才可以通过实例化来调用
*/
$s = new administrator();
print '-------------------';
$s->show();
?>

php5类中三种数据类型的区别

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