Yii doesn't see changes in files?

Question

Yii

I change the code in controllers and models, but Yii does not see them (changes). The code is executed as it was before the changes were made. I did not set any additional settings for caching - everything is by default.
This behavior is seen for the second time in a week. Moreover, if you do not touch anything and let some time pass (somewhere a couple of hours), Yii detects changes and works as it should.
The problem could be that, according to the official Ubuntu documentation , I set up lazy writing to files for the SSD?

vm.laptop_mode = 5
vm.dirty_writeback_centisecs = 6000

But, if you open the file with any editor, you can see that all changes are reflected in it. Maybe the apache-yii bundle somehow works with old file revisions?
UPD:
After restarting the computer, Yii saw all the changes. Most likely a problem with the local file system cache or something similar.

Answer 1

This may be due to setting apc.stat=0 or a similar setting in another opcode cache. The file system cache or ssd has nothing to do with it.

Answer 2

Yes, it could be opcache or eaccelerator. Why use them together at all?

Show what is in php.ini about opcache and eaccelerator