Basics to be followed before using mod_rewrite?!

Posted on 2006-06-26
Last Modified: 2010-03-04
I would like to know what are the basics needs to be followed before using mod_rewrite.

1) i am using php and basically link images and script using relative path. example: src='../images/image1.gif'

2)i am going to use mod_rewrite to show my links like this

please give me the basic ideas to make it work. I had started using this but have some problem if i use relative path...

Any advice suggesstion links infromation welcome. :)

Question by:str_kani
  • 2

Accepted Solution

CraigHarris earned 250 total points
ID: 16996275
The links given out from your PHP scripts need to account for the rewriting, as they will be rewritten unless you add a RewriteCond that makes exceptions for them.

Remember, the browser has no idea about where the files are inside the server, it only knows about the URL it "sees", e.g. -- you must make all your links use this format, if you want relative links to work. It won't be able to decipher a relative URL from if the URL it's using is

Relative paths can in cases make code more managable and more portable - BUT only within modules .... using relative URLs accross modules is a recipe for disaster, as you are now finding out. -- if you can make everything semi-absolute (relative to root) e.g. "/images/image1.gif" then it is easy to skip rewriting these.
LVL 16

Assisted Solution

xDamox earned 250 total points
ID: 17001829

You could try the following in a .htaccess file:

RewriteEngine On

RewriteRule ^article/news/([0-9])   /path/to/script.php?$1

Assisted Solution

CraigHarris earned 250 total points
ID: 17002229
xDamox, that works fine if everything uses the "new" link style, but that doesn't account for relative links from old system
If /article/news/21/ contains a link to ../images/image1.gif
The browser will try to load /article/news/images/image1.gif -- which may or may not be the correct file.

Actually it should be:

RewriteEngine On
RewriteRule ^/article/news/([0-9]+) /path/to/whereever.php?id=$1

or maybe:

RewriteRule ^/article/news/([0-9]+) /path/to/whereever.php?id=$1&type=news

or generically:

RewriteRule ^/article/([A-Za-z]+)/([0-9]+) /path/to/whereever.php?type=$1&id=$2

depending on script structure etc etc

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