Contents Ch. 13


The Common Gateway Interface (CGI)

The "Common Gateway" Is NOT a Revolving Door!

Describing CGI programs
What's going on in a CGI program?

What's in CGI Input?

Short and sweet : the "extended URL" approach
Long-winded and thorough: the input-stream approach
Handling environment variables

Forming Up: Input-Handling Programs

Coding CGI

Ladies and gentlemen: Choose your weapons!
Example 1: What time is it?
Example 2: Counting page visits
Example 3: Decoding clickable map coordinates

Installing and Using CGIs



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Revised -- May, 2002 [MCB]