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public 表示全局,类内部外部子类都可以访问; 代码如下: public $name='Janking', $sex='male', $age=23; function __construct(){ echo $this->age.' '.$this->name.' '.$this->sex.' '; } function func(){ echo $this->age.' '.$this->name.' '.$this->sex.' '; } } $P=new Test(); echo '
'; $P->age=100; $P->name="Rainy"; $P->sex="female"; $P->func(); ?> Public
private表示私有的,只有本类内部可以使用; 代码如下: private $name='Janking', $age=23; function __construct(){ $this->funcOne(); } function func(){ echo $this->age.' '.$this->name.' '.$this->sex.' '; } private function funcOne(){ echo $this->age.' '.$this->name.' '.$this->sex.' '; } } $P=new Test(); echo '
'; $P->func(); $P->age=100; // Cannot access private property Test::$age $P->name="Rainy"; // Cannot access private property Test::$name $P->sex="female"; // Cannot access private property Test::$female $P->funcOne(); // Call to private method Test::funcOne() from context '' ?> Private
protected表示受保护的,只有本类或子类或父类中可以访问; 和封装有关的魔术方法:
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