.Htaccess from ?p=activate&id=57A5dz into users/activate/id/57A5dz - .htaccess

Question

I would like to rewrite my urls from http://www.domain.com/index.php?p=activate&id=57A5dz into http://www.domain.com/users/activate/id/57A5dz.
I searched a lot around google but nothing worked.
I always see the 404 page..
My .htaccess:
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ \?p=$1 [QSA,L]
RewriteRule ^(.*)/(.*)/$ ?page=$1&id=$2
RewriteCond %{REQUEST_URI} ^/web-gallery/images/
RewriteRule ^images/(.+)$ /web-gallery/images/$1
And i also tried to add this:
RewriteRule ^([^/]+)/(\d+)/.*$ $1&id=$2 [L]
Thank you

Answer 1

First let's take a closer look at your rules to understand what they do.
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ \?p=$1 [QSA,L]
If the requested url is not a directory and the requested file is not a file and it the part behind the hostname and before the query string matches ^(.*)$, internally rewrite it to whatever it was and append p= + whatever was matched to the query string. A request to example.com/cookies?are=evil would be rewritten to example.com/cookies?are=evil&p=cookies.
RewriteRule ^(.*)/(.*)/$ ?page=$1&id=$2
If the requested url contains at least 2 path segments, internally rewrite it to the same page and replace the query string with page = everything before the last path segment & id = what is behind it.
RewriteCond %{REQUEST_URI} ^/web-gallery/images/
RewriteRule ^images/(.+)$ /web-gallery/images/$1
If the requested url (or rewritten url) begins with web-gallery/images, rewrite images/something to web-gallery/images/something. There is however no url that matches both the condition and the first argument of rewriterule, so this rule is never, ever, executed.
RewriteRule ^([^/]+)/(\d+)/.*$ $1&id=$2 [L]
If the requested url has more than 2 path segments, where the first path segment doesn't contain a / and the second path segment contains only numbers, drop the rest of the path, and internally rewrite the url to whatever the first path segment was, followed by a & outside a query string and add id=numbers_matched to it. http://example.com/test/1/some/thing?cookies=evil&butter=too would be rewritten to http://example.com/test&id=1?var=2&butter=too.
To look back at what you wanted. You want the user to see http://www.domain.com/users/activate/id/57A5dz. This doesn't make sense to the server, so you'll have to internally rewrite it to let it make sense to the server. http://www.domain.com/index.php?p=activate&id=57A5dz should just do that. We want to match on the first url, and use those matches on the second url. The following (untested) rewriterule should do the trick for you. I hope above explanation gives you a better understanding of how these rules work.
RewriteRule ^users/([^/]+)/id/([^/]+)/?$ /index.php?p=$1&id=$2 [L]