I have WAMP and Xdebug working fine with PHPstorm. I have an annoying issue though that the web browser does not open while debugging. The console php output works fine.
I followed a thread here and made sure that Run > Edit Configuration I have the PHP Web Application setup to use localhost. I made sure that no other defaults were set. See image of the settings. I can open in browser the php files too from the PHP storm right click menu and they open ok: