showing "include" files

In ColdFusion, when in "debug mode" I get a list of all the files that were included by the parent template. For example, if i'm viewing http://127.0.0.1/foo.cfm and foo.cfm includes bar.cfm and cheese.cfm, the bottom of foo.cfm, when rendered to the browser, looks like this:

Included Files:
/bar.cfm
/cheese.cfm

Is there an option in PHP to do the same thing? Something I can turn on in PHP.INI perhaps? I'm dealing with a legcay app that I inherited and am having the worst luck trying to figure out which include files are getting used, and where.

thanks.