So how many book titles have an underscore? Rich Bowen’s book (DGAm) has started a new trend. Well none according to Amazon, if you search for _ but they do have it!

Published by Apress, the shortish (120 pages) hardback covers one of the most complicated and arcane subjects. mod_rewrite. This is a module for Apache web-servers that lets you do all sorts of wonderful changes to urls dynamically. Its used for instance to simplify urls, making long complex urls with parameters look like a directory structure.

mod_rewrite is a very complex module- i reckon anyone who is fully at home should be given free entry to Mensa.

Content wise its a combination of cookbook and how-to in 12 chapters from an introduction, look at regular expressions, installation with the bulk of the book explaining the various rewrite modules and how and when to use them and not use them.

This is a book that remains on your shelf until you need it, but when you need it it is invaluable. Rating 8/10. Link to On Amazon.co.uk