问题
I have a large web app, and I think there are a bunch of old files that are no longer being used, is there an app which can tell me what these files are?
回答1:
There is also the Dead Code Detector (DCD). It finds functions that are never called, which may help to clean up even the files you keep in production.
回答2:
You should be able to start with your web server logs. These will show you which files ARE being used. From there you should be able to track down a good number of the files those reference. Don't know of a good way to find out which aren't being used, only those that are.
回答3:
I think you need to check out the project management tools available for php.
You can have a look at phpUnderControl (http://www.phpundercontrol.org/about.html) and CruiseControl (you can google it).
You can also use a tool (i.e and IDE) that will give a Code Coverage Report.
来源：https://stackoverflow.com/questions/1811421/determining-which-php-source-files-are-not-used