PHP can be used to process input from forms and work with data bases from within HTML files rather than having to make calls to CGI scripts. The computer that serves files to other computers, usually on the basis of a request from a client . For example, see server-side includes . The actual code of a computer program. Often, the actual commands are hidden from the user in a batch of text that appears to be a combination of gibberish and comic-strip cursing.
Some software is provided in open source form.
There are several versions of unix.