apache - .htaccess rewrite regex regular expressions -

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my url is:

http://www.domain.com/seattle_wa_math

it needs point to:

http://www.domain.com/list.php?city=seattle&state=wa&s=math

here's have far, doesn't work...

rewriterule ^[a-za-z_\-]+_[a-z]{2}_[a-za-z0-9_\-\(\)]+\/$ list.php?city=$1&state=$2&$s=$3 [l]

this should it:

rewriterule ^([a-za-z\-]+(?:_[a-za-z\-]+)*)_([a-z]{2})_([a-za-z0-9_\-\(\)]+)\/?$ list.php?city=$1&state=$2&$s=$3 [l]

allows multiple worded citys , subjects , optional trailing / path.


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