如何为此编写htaccess规则

Question

I am new to htaccess rules and i am finding it difficult to write a htaccess rules to convert

http://www.frontieragturf.com/category.php?cat_id=1
to
http://www.frontieragturf.com/category/1

I have tried these rules but that didn't work.

.htaccess remove query string, keeping SEO style url
Customize Url or Hide Query String using .htaccess

RewriteEngine On
RewriteBase /
RewriteCond %{QUERY_STRING} "cat_id=" [NC]
RewriteRule (.*)  /$1? [R=302,L]

I have write this but its remove whole query string including 1
like this http://www.frontieragturf.com/category.php

Answer 1

RewriteEngine On
RewriteCond %{REQUEST_URI} ^category\.php$
RewriteCond %{QUERY_STRING} ^cat_id=(\d+)$ [NC]
RewriteRule .* /category/%1? [R=302,L]

Here, %1 refers to the first matching group of the previous RewriteCond , while $1 would refer to the first matching group from this RewriteRule , like in RewriteRule (.*) /category/$1 . The manual says:

RewriteCond backreferences: These are backreferences of the form %N (0 <= N <= 9). %1 to %9 provide access to the grouped parts (again, in parentheses) of the pattern, from the last matched RewriteCond in the current set of conditions. %0 provides access to the whole string matched by that pattern.

The last ? kills the original query string. Without it, it would be repeated for the redirected query: it would be /category/1?cat_id=1 , while the OP needs /category/1 .

Answer 2

Place this code in your DOCUMENT_ROOT/.htaccess file:

RewriteEngine On
RewriteBase /

RewriteCond %{THE_REQUEST} \s/+category\.php\?cat_id=([^\s&]+) [NC]
RewriteRule ^ category/%1? [R=302,L]

RewriteRule ^category/([^/.]+)/?$ category.php?cat_id=$1 [L,QSA,NC]

Change 302 to 301 once you verify it is working for you.