The book excells as a quick reference to these and virtually all other webmaster areas, including Apache server configuration, CGI variables and much more. You just can't beat it. It replaces half a dozen books costing thirty or fourty quid each!
Now on to the nitpicking... and why I only gave it 4 out of 5 stars.
I was exceptionally disappointed to see that the Perl Quick Reference that I had been so fond of in the first edition had now been replaced with a mere overview of the cgi.pm module; and that a quick reference to the PHP scripting language appeared to have taken Perl's place.
Yes, I have other Perl references. Heck, I've *already* got the Perl Pocket Reference, Perl In A Nutshell and Linux In A Nutshell (which includes a Perl Quick Ref). But that's not the point.
The second edition, like the first, sells itself as the only book you'll keep on your desktop (as opposed to on your shelf). Sorry, but with the Perl Quick Ref missing, this just isn't true anymore. Perl is the number one CGI programming language and the number one quick fix language. Whatever you want to do, you can rattle up a quick and dirty Perl solution in seconds. PHP just isn't up in that category. I need a Perl Quick Reference on my desk at all times.
O'Reilly, *please*, put back the Perl Quick Ref and earn yourself the full five stars.