Route Middleware

Hmm - loaded question. By any conventional or enterprise definition, CodeIgniter *is* middleware.

There is, however, PSR-7 (HTTP message interfaces) and/or PSR-15 (HTTP middleware) from PHP-FIG.

These are not the same thing!

We have discussed this in the council, and do not feel that PSR-7 is consistent with CodeIgniter's goals of being lightweight. CodeIgniter is intended to be extensible, however, and there is nothing to stop a developer from adding a PSR-7 implementation or bridge to their application.

Bottom line: there are no plans to implement PSR-7 in CodeIgniter 4.

Sorry, I could have been much more clear. I was referring to http middleware as seen in Silex, Laravel, and Slim. The routing middleware can be very convenient.

I completely understand trying to keep it lightweight. Thank you for the response.

Codeigniter is simply one of the tools you need to learn to be a successful developer. Always add more tools to your coding arsenal!