我的印象是子类继承了父类的属性。但是,以下是 B 类中的输出 null ...有人可以告诉我如何从父类访问属性吗?
$aClass = new A();
$aClass->init();
class A {
function init()
{
$this->something = 'thing';
echo $this->something; // thing
$bClass = new B();
$bClass->init();
}
}
class B extends A {
function init()
{
echo $this->something; // null - why isn't it "thing"?
}
}