If you are not using any PHP opcache accelerator, you should. If you are using APC, you should move to OPCache. If you are already using it, you should use opcache-dashboard also.

When a project gets bigger, specially when using a framework, it’s mandatory to have some processes that help you in removing code that is not used anymore such as models, classes, template files, etc.

That is not an easy task, however the benefits or removing non used coded are tons (code coverage, development speed, bugs, etc.). But what’s the best approach to detect that a template file is not used anymore in your PHP project?