Long description

Step 1: A request is made from a browser as follows: I want to see vacation dot p h p.

Step 2: The server recognizes that the request necessitates running a program on the server.

Step 3: This program will often interact with other resources on the server, such as a database or services on other computers.

Step 4: Server program generates HTML that will be sent back to client.

Step 5: Browser displays page based on HTML and other resources requested within it.

Note: Steps 1 and 5 are labeled front end. Steps 2, 3, and 4 are labeled back end.