Script to extract keywords from domain names

I need a script that will extract the keywords from a list of domain names. The script will assume the English language. For example: I will enter: [login to view URL] [login to view URL] and i will get: cheap car red men standing I want to enter the domains in an online text box, submit and then the script will provide a list of the keywords on screen as well as in a csv download, like this: [login to view URL] cheap car [login to view URL] red men standing The script should be able to handle up to 10,000 domains of any extension (.com, [login to view URL], .net, etc.). I want it done in php and mysql. Thank you for your time.