Regex for extracting filename from path

Question

I need to extract just the filename (no file extension) from the following path....

\my-local-serverpathohis_file may_contain-any&character.pdf

I've tried several things, most based off of something like http://regexr.com?302m5 but can't quite get there

Answer 1

^\(.+\)*(.+).(.+)$

This regex has been tested on these two examples:

varwwwwww.example.comindex.php
index.php

First block "(.+)*" matches directory path.
Second block "(.+)" matches file name without extension.
Third block "(.+)$" matches extension.