mark_as_published_V2.php

<?php
class Article
{
 public const DELETED = 'deleted'; // 🎉 Use this constant is more readable and prevent typos
 public const PUBLISHED = 'published';
 
 private string $status;
 // getters & setters
}

class PublishArticleHandler
{
 public function __invoke(Article $article)
 {
      if ($article->getStatus === Article::DELETED)) {
        throw new LogicException(sprintf("Cannot mark as published as the article is deleted"));
      }
   }
   
    $article->setStatus(Article::PUBLISHED);
 }
}