I am a network administrator for my company and we have a new Graphic Designer that took over our previous designers position. However, it has been recently discovered that the former designer designed quite a bit of our sites in PHP. I am a stranger to this whole process and have slowly been learning how to setup a test server for testing PHP pages the past couple of days. So currently I have WAMP setup and it is functioning correctly, in that the test PHP page shows with no issue. However, upon trying to test the sites that were developed in PHP I get an error while browsing the sites under the test php sites under "Your Projects" when I click on the site I get the following error "Error establishing a database connection". So that tells me that these PHP sites have backends to them. How do I connect the backend/MySQL databases to these PHP sites?