Redirection using mod_rewrite
Redirecting websites or web pages using
Mod_rewrite is a module of the Apache Web Server, and for
the purposes being discussed here, the redirect capability serves
the function of instructing the server how to handle delivering
the location of specific pages or sites to user agents, either web
browsers or search engine spiders.
As with all server-side functions or programs, mod_rewrite operates
at the server level, before the page is ever delivered to the user
agent, either a browser or search engine spider, so it's a completely
Redirecting pages using mod_rewrite is is done by putting a few
lines of code into a file called .htaccess which goes into
the root directory of the site. First you'll have to make sure you're
on an Apache Web Server that supports mod_rewrite, and create
an .htaccess file. If your web host doesn't support .htaccess
or mod_rewrite, it may be time to change hosts.
This is strictly for Apache web servers; if you're on M$ hosting
you're on your own.
Apache's mod_rewrite and Front Page Extensions sometimes don't
play well together at all.
If you host your site on IIS/Microsoft Server, there is an equivalent
that you can find out about by doing a search at your favorite search
Types of Redirection: Temporary and Permanent
There are two types of server-side redirection, and each of them
returns different server header codes and sends a different "signal"
especially important for search engine indexing purposes:
- Permanent redirection: 301 Redirect
- Temporary redirection: 302 Redirect:
Using 302 is what most domain registrars do when "pointing"
pages, and while it's beyond the scope of what we're looking at
here, 302 temporary redirects are not a good thing at all
where search engines are concerned.
Reasons to Redirect
Redirection can be done for a number of reasons, including:
- Redirecting the Homepage
- Redirecting When a Page Has Moved
- Using Redirection When a Site is Moved to Another Domain
Yes, mod_rewrite is Rocket Science
After all is said and done, in my opinion using .htacess or mod_rewrite
IS rocket science, with all the little symbols and squidgets. But
as long as the server supports mod_rewrite (and if yours doesn't
it may be time to change hosts) it's simple enough to copy and paste
a couple of lines of code that will accomplish just what we need.
Using Mod_Rewrite |
Web Pages using mod_alias | Creating
an .htaccess file
File Sizes | Web
Official Documentation for URL
Rewriting with Apache HTTP Server