Rewrite URL with multiple parameters

Question

I have a URL that sometimes has one or more parameters and I want to be able to rewrite accordingly.

The URLs are as follows:

/index.php?pagetitle=Home

I have managed to get this URL to display how I want using the following:

/Home

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^([0-9a-zA-Z]+) index.php?pagetitle=$1 [NC,L]

I would also like to be able to have the same URL, but with article ID

.com/index.php?pagetitle=Home&articleid=20

which i would like to display like this:

.com/Home/20

But I can't seem to figure out how to get it to work on more than one parameter.

UPDATE: Ok so i managed to get the below to work using : index.php?pagetitle=$1&articleid=$2

Which displays as: .com/Home/20

I have tried to take it a step further and be able to use the article title as well the rule i tried is as follows.

RewriteRule ^([0-9a-zA-Z]+)(?:/([0-9a-zA-Z]+))(?:/([0-9]*))?/?$ index.php?pagetitle=$1&articletitle=$2&articleid=$3 [NC,L,QSA]

So would display as : .com/Home/ArticleTitle/20

But it doesnt want to work for me does any one know what i am doing wrong and thanks again in advance.

http://karpium.co.uk/Home/Baits/20 - This Url Works

http://karpium.co.uk/Home - But this url doesnt work where as it does when just using the pagetitle= and articleid=

Answer 1

You can use the following Rule :

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^([0-9a-zA-Z]+)(?:/([0-9]*))?/?$ index.php?pagetitle=$1&articleid=$2 [NC,L,QSA]

Answer 2

Ok so seems like i have fixed it using 3 different rewrite rules which are as follows:

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^([0-9a-zA-Z]+)$ index.php?pagetitle=$1 [NC,L,QSA]
RewriteRule ^([0-9a-zA-Z]+)(?:/([0-9a-zA-Z]+))?/?$ index.php?pagetitle=$1&articletitle=$2 [NC,L,QSA]
RewriteRule ^([0-9a-zA-Z]+)(?:/([0-9a-zA-Z]+))(?:/([0-9]*))?/?$ index.php?pagetitle=$1&articletitle=$2&articleid=$3 [NC,L,QSA]

If any one can shed some light onto a few parts of the regex for me it would be very much appreciated:

What do the following mean?

?:/

?/?

Thanks again for all the help :)