PHP class_alias，var_dump作为该类

Question

I'm working on a library to connect to the Eventbrite API. I've made it generic enough that a lot of the second level business objects are empty classes. Having said that, when I instantiate those objects, I would still like them to register as different classes. I thought class_alias would be the way to go, but it seems that the original class is what is returned when doing a var_dump.

Current:

<?php

namespace Project;

class_alias(
    '\\Project\\Classes\\Aliaser', 
    '\\Project\\Classes\\Attendee',
    true
);

use Project\Classes\Aliaser;
use Project\Classes\Attendee;

$attendee = new Attendee();
var_dump($attendee)
// Aliaser {}

What I'm shooting for:

$attendee = new Attendee();
var_dump($attendee);
// Attendee {}

I would really like to delete the empty classes in favor of the generic one while also having the new dynamically generated class be registered.

Is that possible without a serious performance hit?

Note: Prefer PHP 5.4 or greater, but PHP 7 is also good.

Answer 1

You can create an instance of a class without puting the code to a file by using eval:

// define the class if it does not exists
if (!class_exists (\Eightfold\Eventbrite\Classes\ApiResource\Question::class)) {
    eval ( 'class Question extends \Eightfold\Eventbrite\Classes\ApiResource {} ');
}

//create instance
$instance = new \Eightfold\Eventbrite\Classes\ApiResource\Question ();

P.S. If you don't find another solution without eval then you should consider this quote:

If eval() is the answer, you're almost certainly asking the wrong question. -- Rasmus Lerdorf, BDFL of PHP