class A {
var $authKey='1111';}class B extends A{
__construct(){
echo parent::authKey;
}
}
报错Undefined class constant 'authKey'
var $authKey='1111';}class B extends A{
__construct(){
echo parent::authKey;
}
}
报错Undefined class constant 'authKey'
但$authKey不是静态变量,所以你不能这么静态调用
正确的做法
class A {
// 不建议类中用var来声明变量
public $authKey='1111';
}class B extends A{
// B将拥有A的所有非private成员
public function __construct(){
echo $this->authKey;
}
}
const authKey='1111';}class B extends A{
public function __construct(){
echo parent::authKey;
}
}new B;