PHP 从构造函数获取返回值

2021-12-30 00:00:00 class constructor php

我很困惑，我有一个带有构造函数的 PHP 类:

I am confused, I have a PHP class with a constructor:

class Test {
   public function __construct() {
      return "some text";
   }
}

然后我实例化一个对象:

Then I instanciate an object:

$t = new Test();

我希望 $t 的内容是一些文本":

I would expect the contents of $t to be "some text":

print_r($t);

但它是:

Test Object
(
)

如何从构造函数中获取返回值"some text"?

How do I get the returned value "some text" from the constructor?

推荐答案

你不能从构造函数return任何东西.new 关键字总是会产生一个新的对象，不管你从构造函数中return 什么.

You cannot return anything from a constructor. The new keyword will always result in a new object, it does not matter what you return from the constructor.

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