Web Crawler using MySQL DB: Retrieve Web pages and store links in a database

This class can be used to retrieve Web pages and store the URLs links in a MySQL database.

It retrieves a given Web page and parses its HTML content to extract the URLs of links and frames.

The URLs that are crawled are stored in a MySQL database table if the URL was not yet stored previously.

The class can also display in a Web page the list of URLs already stored from a given domain.