Classes with a lot of lines of code are generally bad. Too many responsibilities, low cohesion, or both. However, sometimes it is not possible to make functions smaller. Reasons could be various. What can be done in this circumstance?

More than once I needed to render a laravel view as a downlodable file. This task could be easily accomplished

Laravel 6 introduced the LazyCollection, a different kind of collection which exploits php generators to save memory usage. While data fetching from database is natively managed by eloquent, Web API-based data fetching is not provided. This article describes how to use a paginated api endpoint to fetch data to a LazyCollection instance.

PHP 8.1 introduced the new Fiber class (see the proposed RFC here https://wiki.php.net/rfc/fiber), which allows running coroutines inside your script, i.e. two functions executing simultaneously