听力原文:M: The guests are leaving for New York today on the ten o'clock flight. We need someone to get them to tile airport on time. W: Ordinarily, I'd be happy to, but my car is in the garage. How are the guests going to New York?
【单选题】执行以下代码,输入结果是( )。 class A{ function __construct(){ echo "echo class a something"; } } class B extends A{ function __construct(){ echo "echo class b something"; } } $a=new B();