如何在另一个函数中访问一个函数的返回值？

I have one function that ends with:

return $authors;

How can I access this value in another function within the same class?

I've tried (in the second function)

$this->authors;

But it doesn't seem to do anything.

public function returnAuthor()
{
   return $author;
}

public function anotherMethod()
{
   return $this->returnAuthor();
}

You could follow a similar method as stated in the above example. or you could define a property for your class, have one function assign a value to it and have another function return the value

Like so

class Book
{
   public $author;

   function __construct()
   {
      $this->author = 'Sir Conan Doyle';
   }

   function anotherMethod()
   {
      return $this->author;
   }
}

Hope this helps!