Module development and code questions

Hello,

I'm using Acquia site studio, and I don't have much experience.

Just a tip, if you didn't know: Drupal contributors with 35 or more issue credits gained over the past year can get a free PhpStorm license. See Free PhpStorm license for Drupal contributors.

Hi, in a custom form I have several php files, both in the form and Controller folder.
From these files I need to call some functions that are the same for many. Until now I have rewritten them but to avoid errors, I would like to write them in a single file but I am not clear how to do it

Hello,

I'm having problems controlling access to nodes since I upgraded to Drupal 10. The options I had explored, by taxonomy or by content, have not yet been upgraded to Drupal 10. Any solutions?
Thank you so much.

Hello community, I am new to Drupal and I am investigating how it works, the question is that I deleted by mistake the content article that brings by default, I searched and found how to create a new one, but using it does not publish it on the main page.
Does anyone know why? thank you very much!

We are using Drupal CMS to store the multilingual content and its served through custom APIs. We have a CMS GUI for content authors where they can view, search, filter, translate, add, edit and delete the content. We have done lots of customization in the CMS and also migration it from Drupal 7 to 8 and to 9.