Introduction to mod_rewrite and some basic examples
ModRewrite is a powerful feature of the Apache web server. It provides an easy way to modify/manipulate URLs. As complicated as it sounds a regular webmaster can benefit from this feature in many way. I will list here the ones I consider most useful for the regular webmaster.
Create easy to remember URLs or also known as COOL URIs, other call them Search Engine Friendly URLs. For example you have some complicated site driven by some server-side scripting language: PHP, Perl, etc. In general its URLs will look like
It is not easy to remember such URL.
Using ModRewrite you can make the URL look like:
Here is the code:
RewriteRule ^([a-z]*)/([a-z]*)/([1-9]+)(-[1-9]+)? $ http://www.example.com/view.php?cat=$2&a=$3&page=$4&lang=$1 [L]
What the code does? It tries to match the requested URL against a regular expression string.
In case it finds a match it performs an internal rewrite. The user will never see the long URL in his browser.
Change enviromental variables
An example can be found here
The official ModRewrite documentation can be found at:
http://httpd.apache.org/docs/1.3/misc/rewriteguide.html
In the next several articles you will find some commonly used ModRewrite rules for performing everyday tasks.
- How to block users from accessing your site based on their IP address
- How to prevent or allow directory listing?
- How to change the error documents – 404 Page Not Found, etc
- Using .htaccess for password protecting your folders
- Using .htaccess to block referrer spam
- Disable Hot-Linking of images and other files
- Redirect URLs using .htaccess
- Introduction to mod_rewrite and some basic examples
- Force SSL/https using .htaccess and mod_rewrite
- 301 Permanent redirects for parked domain names
- Enable CGI, SSI with .htaccess
- How to add Mime-Types using .htaccess
- Change default directory page
- Block Bad robots, spiders, crawlers and harvesters
- Make PHP to work in your HTML files with .htacess
- Change PHP variables using .htaccess
- HTTP Authentication with PHP running as CGI/SuExec
- Force www vs non-www to avoid duplicate content on Google
- Duplicate content fix index.html vs / (slash only)
Comments 5 >>
its for xml.
You can even create httpd.ini file and add mime type codes for IIS and get it worked.
Anyway, I support Unix/PHP combination a lot!
www.CrazzyDeveloper.Co.CC :)
RewriteRule ^([a-z]*)/([a-z]*)/([1-9]+)(-[1-9]+)? $ http://www.example.com/view.php?cat=$2&a=$3&page=$4&lang=$1 [L]
...and understand exactly what I needed to do and it's working great.
:D
Many thanks.
@Watch Avatar the last airbender - No, if there was a dash inbetween the last two parts (in brackets) of the rewriting statement it would display as he intended, afaik.
We migrated our site recently from an .asp site to Joomla.
So from url like :
http://site.com/info/facts/psychosis.asp
we now have :
http://site.com/info/facts/psychosis
Instead of writing a redirect for every url, I would want through htaccess, remove .asp from any url since some people have bookmarked the old urls.
Is this possible through htaccess?
Thanks in advance
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http://www.example.com/en/articles/10-2
Should be:
http://www.example.com/en/articles/10/2
Am I correct? I am actually confuse. Really hope to hear your reply =)