PHP面试题之访问控制
对属性或方法的访问控制,是通过在前面添加关键字 public、protected 或 private 来实现的。由 public 所定义的类成员可以在任何地方被访问;由 protected 所定义的类成员则可以被其所在类的子类和父类访问(当然,该成员所在的类也可以访问);而由 private 定义的类成员则只能被其所在类访问
代码如下 | 复制代码 |
class Foo { private $name = 'hdj'; public function getName(){ return $this->name; } } class Bar extends Foo { public $name = 'deeka'; } $bar = new Bar; var_dump($bar->name); var_dump($bar->getName()); |

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