How to print out the class files contained in a file

The premise of how to print the class files contained in a file is that a file contains a file or class, and the files contained in it contain other classes, which are nested and messy, in this case, if we print out the class files it contains, we can clearly see the logical track. I don't know how to achieve this dream.

Reply to discussion (solution)

See
Http://bbs.csdn.net/topics/390836735

I usually use phpcoverage to do this. In fact, the tester deploys this environment on all the development machines of the company to ensure 90% code coverage.
The lines in the files used can be displayed. xdebug xml and other things are required for this environment.

I don't know if there is any better way for others?