Mapping tables and pages?

Does anyone know of a tool/util which could map out our DB and pages?

Here's where I'm coming from:
We have a list of changes to make to our DB and the PHP interface.
I'd like to put together a list (map) of every table referenced on
each php page, as well as one showing every php page which uses each
table.

I'd like to have this for easy reference so that when we bring in a
programmer, he can work more efficiently and be less likely to create
bugs.

Any ideas?

-Mo