Equivalent of let/const for PHP would be manual use of include/require when loading php files, modern code bases rely on an auto loader. There are some legitim

Equivalent of let/const for PHP would be manual use of include/require when loading php files, modern code bases rely on an auto loader. There are some legitimate use cases of manually loading a php file, e.g loading the auto loader, but that is usually the exception and not the rule today.