CI 3.1.2 Unable to load any controller but default

It should work on 5.3.7 as well, but we strongly advise you NOT to run such old versions of PHP, because of potential security and performance issues, as well as missing features.

Yes, you are right, I'm just testing CI 3.0 to see how it works on a private server though, when the time comes to start developing, I'll use a much newer environment. Thanks for the hint though :-)

CodeIgniter Users Guide: PHP version 5.6 or newer is recommended.

How is that related to the topic?

Because the Users Guide states that:

It should work on 5.3.7 as well, but we strongly advise you NOT to run such old versions of PHP, because of potential security and performance issues, as well as missing features.

... and it has nothing to do with the OP's problem.

Code:

<?php
var_dump( $_SERVER['REQUEST_URI']);
var_dump( $_SERVER['QUERY_STRING']);
var_dump( $_SERVER['PATH_INFO']);

call it like "test.php/welcome" and post the result

I've tried this and I also get a not found error, but if I just run test.php it returns data in the REQUEST_URI value (QUERY_STRING is an empty string and PATH_INFO is NULL).

It seems php is connected cause it runs (and otherwise the welcome controller won't work either) but there must be something in the Apache configuration, I'll check. Thanks I hope this leads me through the good track :-)

https://httpd.apache.org/docs/2.4/en/mod...ptpathinfo