PHP 8.0 was released recently at the time of this post is written.
Surprisingly, Codeigniter 3 does not generate any error message this far in PHP 8.0.
Meanwhile, Codeigniter 4 generates some user warning in PHP 8.0 (update on August 2021 : there is no warning anymore in my scripts).
Fortunately my projects are still in Codeigniter 3, so i can use them with PHP 8.0.
- There is bug in session flashdata : the data won’t be deleted after retrieved.