$articles = rex_article::getRootArticles();
$article = rex_article::get($article_id);
$article = rex_article::getCurrent();
$category = $article->getCategory();
$categoryId = $article->getCategoryId()
// Artikelnamen ausgeben
echo rex_article::getCurrent()->getName()
// Artikel nach Erstellungsdatum sortieren
$articles = rex_article::getRootArticles();
usort($articles, function ($a, $b) {
return $a->getCreateDate() > $b->getCreateDate();
});