November 2003
Intermediate to advanced
254 pages
5h 39m
English
Content preview from Apache CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 5. Aliases, Redirecting, and Rewriting
When Apache receives a request, it is assumed that the client will be served a file out of the DocumentRoot directory. However, there will be times when you want these resources to be served from some other location. For example, if you wanted to place a set of documents on your web site, it may be more convenient to leave them where they are, rather than to move them to a new location.
In this chapter, we deal with three general categories of these sort of cases. Aliasing refers to mapping a URL to a particular directory. Redirecting refers to mapping a URL to another URL. And Rewriting refers to using mod_rewrite to alter the URL in some way.
Other recipes in this chapter are related because they map URLs to resources that are at unexpected places in the filesystem.
These topics are particularly interesting to webmasters who want to avoid link-rot or have sites that are periodically subject to upheaval (files or directories are moved around, or even moved from server to server). The redirection and rewriting capabilities of the Apache web server allow you to conceal such ugly behind-the-scenes disturbances from the eyes of your Internet visitors.
5.1. Showing Highlighted PHP Source Without Symlinking
Problem
You want to be able to see the syntax-enhanced source to your PHP scripts without having to set up symbolic links for all of them.
Solution
Add a line such as the following to your httpd.conf file:
RewriteRule "^(.*\.php)s$" "/cgi-bin/show.php?file=$1" ...
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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.