I thought it was funny, until I checked out the example content, and realized it was a standard "php" introduction book. It doesn't build off the concept it's title presents, and so I feel it's fair to say this book is just pandering.
Not something I would proudly show off, by any means.
"You will also learn ... to manage your code with Subversion" How is this possible in 2013 ?
The author is very literally taking the phrase: "Sex sells".