October 2009
Beginner
408 pages
7h 27m
English
Content preview from PHP for Absolute Beginners
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12.2. Basic Spam Prevention
Unfortunately, any web form is a potential target for spammers, both human and automated. If left unchecked, spammers can ruin a blog by flooding the comments with irrelevant links and other garbage. The spam buries legitimate comments and makes it difficult to find anything meaningful in the comment section, which can cause your users to give up on leaving or reading comments altogether.
To address this problem, you'll need to take some anti-spam measures on your comment form. There are myriad options available for spam prevention, ranging from user-dependent systems such as CAPTCHA[] (the squiggly letters and numbers you've no doubt seen on some web forms), to server-side technologies such as Akismet[] (which identifies ...
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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.
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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.