Build web app that will parse a full US address into separate street, city, state, zip columns

I have a spreadsheet of about 5,000 US addresses that I need to be validated and then parsed out into separate Street, City, State, Zip columns. I would like this to be built into a web app (preferably php) so that I can easily reuse it in the future to parse more addresses. Some examples of existing services: [login to view URL] (please note I only need address parsing, nothing else for now) This job is just for the tool to parse addresses. No need for a website or any graphic work. Please use a free API if needed such as Google Maps API.