.htaccess重写正则表达式正则表达式

http://www.domain.com/Seattle_WA_math

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

RewriteRule ^[A-Za-z_-]+_[A-Z]{2}_[A-Za-z0-9_-()]+/$ list.php?city=$1&state=$2&$s=$3 [L]

RewriteRule ^([A-Za-z-]+(?:_[A-Za-z-]+)*)_([A-Z]{2})_([A-Za-z0-9_-()]+)/?$ list.php?city=$1&state=$2&$s=$3 [L]

/

RewriteEngine on
Options +FollowSymlinks -MultiViews
RewriteRule ^([A-Za-z-]+(?:_[A-Za-z-]+)*)_([A-Z]{2})_([A-Za-z0-9_-]+)/?$ /list.php?city=$1&state=$2&s=$3 [R,L,QSA,NE]

R=301

L

NE

QSA

$1

$2

$3