Hour 4. Writing Your First CGI Program
In the previous hour, I explained how to make sure your CGI environment is configured and running properly, and how to adapt CGI programs downloaded from the Internet to work properly in that environment. In this hour, you’ll get your first real look at developing CGI programs from scratch. I’ll also provide you with a brief overview of Perl programming that will help non-Perl programmers understand how the programs in this book work. This hour covers
The structure of a basic CGI program
How to write a program that redirects a user to a new URL
How redirection of input and output works
How to deal with filehandles in Perl
How Perl loops and conditional statements work
How to use Perl expressions
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