mod rewrite - mod_Rewrite conditions and rules ( confused ) help please -

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help please,

after numerous hours searching solution problem have become confused, appologies if been answered before.

i have current url :

http://www.mydomain.com/news/dentistry_dental/article_detail.php?article=2968&title=redefining-oral-hygiene-intervention

i cleaning urls have created rewrite rule parse following previous url :

http://www.mydomain.com/dental_news/2968/redefining-oral-hygiene-intervention

the rule have used in .htaccess file below :

rewriterule ^dental_news/([^/]*)/([^/]*)$ /news/dentistry_dental/article_detail.php?article=$1&title=$2 [l]

this working expected, however.. need have old url ( indexed on many search engines ) point new url 301 redirect.

i have tried numerous things of yet nothing errors, presume looping error have.

does out there have idea how can achieve 2 way redirect without looping?

any appreciated

edit

the above problem has been resolved, can see answer below, have query, should me in understanding whats going on hope :)

i have url www.mydomain.com/news/dentistry_dental/index.php want redirect 301 www.mydomain.com/dental_news/

i have tried rewriting code answer below fail, still lacking understanding of whole thing think.

any great :)

regards m

try following. first condition should protect redirect loop (it matches requests not beginning /dental_news. %1 , %2 match corresponding regex groups previous rewritecond. also, trailing ? on rewriterule, remove querystring on redirect.

rewritecond %{request_uri} !^\/dental_news\/ rewritecond %{query_string} article=([0-9]*)&title=(.*)$ rewriterule (.*) /dental_news/%1/%2? [l,r=301]

hope helps.

edit: changed last group of second rewritecond match until $ of $fr=1, if intended &1, can change end of rewritecond group ([^&]*) instead.

rewritecond %{request_uri} !^\/dental_news\/ rewritecond %{query_string} article=([0-9]*)&title=([^$]*)$ rewriterule (.*) /dental_news/%1/%2? [l,r=301]

edit:

rewriteengine on  rewriterule ^dental_news/([^/]*)/([^/]*)$ news/dentistry_dental/article_detail.php?article=$1&title=$2&redirect [l]  rewritecond %{request_uri} !^/dental_news/ rewritecond %{query_string} article=([0-9]*)&title=([^&]*)$ rewriterule (.*) /dental_news/%1/%2? [l,r=301]

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