CGI Programming on the World Wide Web
Another free ebook from Oreilly books publisher, a book on programming CGI
One of the Internet’s worst-kept secrets is that CGI is astoundingly simple. That is, it’s trivial in design, and anyone with an iota of programming experience can write rudimentary scripts that work. It’s only when your needs are more demanding that you have to master the more complex workings of the Web. In a way, CGI is easy the same way cooking is easy: anyone can toast a muffin or poach an egg. It’s only when you want a Hollandaise sauce that things start to get complicated.
CGI is the part of the Web server that can communicate with other programs running on the server. With CGI, the Web server can call up a program, while passing user-specific data to the program (such as what host the user is connecting from, or input the user has supplied using HTML form syntax). The program then processes that data and the server passes the program’s response back to the Web browser.
CGI isn’t magic; it’s just programming with some special types of input and a few strict rules on program output. Everything in between is just programming. Of course, there are special techniques that are particular to CGI, and that’s what this book is mostly about.
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CGI Programming on the World Wide Web
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