September 2002
Intermediate to advanced
544 pages
13h 6m
English
Content preview from Sams Teach Yourself CGI in 24 Hours, Second Edition
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Incorporating Validation into the Form-Processing Code
When many people begin writing CGI programs, they wind up writing lots of extra code. For example, they create an HTML page with a form on it, and then they write a CGI script to which the form will be submitted. If that script includes code to validate the user’s input, chances are they’ll also write code that redisplays the form with the values the user entered and messages to indicate where the user made errors.
This is a perfectly valid method for creating Web applications, but it’s probably not the most efficient method available. The main problem with this approach is that if the code to display the form already exists in the CGI script, there’s no reason to reproduce it in a separate ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.