find() on model gives id as string in one environment and int in other

Question

I am using Laravel 5 and have a model Book.

I have two environments - dev and production

On dev: In tinker

Answer 1

Obviously you don't want to do any manual casting as suggested in comment. It seems that on one server you miss mysqlnd extension (I need to assume you use MySQL because you haven't mentioned it in your question) what causes that all data types are returned as strings.