Finding the PHP File (at run time) where a Class was Defined

Question

Is there any reflection/introspection/magic in PHP that will let you find the PHP file where a particular class (or function) was defined?

In other words, I have the

Answer 1

if you had an includes folder, you could run a shell script command to "grep" for "class $className" by doing: $filename = ``grep -r "class $className" $includesFolder/*\ and it would return which file it was in. Other than that, i don't think there is any magic function for PHP to do it for ya.