Create CI4 project in sub folder

You will need to place the contents of the public folder inside codeigniter_project, and move the application elsewhere.
https://codeigniter.com/user_guide/gener..._apps.html

Thank you for your answer.

I saw this solution but I don't want to change the structure of the project. I think there is a solution with .htaccess file but I didn't find it.

I want to easily move my project without change the structure.