.Htaccess Rewriterule to Preserve Get Url Parameters

RewriteRule that preserves GET parameters

The regex on the RewriteRule is only run against the path part of the URL, not the query parameters. Fortunately there is the [QSA] flag to preserve existing query parameters.

.htaccess RewriteRule to preserve GET URL parameters

You need to append with the [QSA] (query string append) tag. Try

RewriteEngine on
RewriteRule ^([a-z]{2,2})/([a-zA-Z0-9_-]+)$ index.php?lang=$1&page=$2 [QSA]

See http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html

.htaccess rewriterule keep parameters

You need to add a QSA flag to your rewrite rule, so that the brackets look like this:

[L,QSA]

This tells apache to append any existing query string to the new query string in the target (mode=allBrands).

more Info there: https://cwiki.apache.org/confluence/display/HTTPD/RewriteFlags+QSA

Redirect and keep the parameter in the url on .htaccess

You may use this redirect rule at the top of .htaccess:

RewriteEngine On

RewriteCond %{QUERY_STRING} (^|&)foo= [NC]
RewriteRule ^/?$ /new-nice-page [L,R=301]

Note that query string is automatically carried forward to target URL.

.htaccess rewrite rule for urls with parameters

Ordering of rules is probably causing this problem. Try these rules in proper order:

RewriteEngine On
RewriteBase /app/

RewriteRule ^user/([0-9]+)/?$ user.php?id=$1 [QSA,L,NC] 

# hide .php extension
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{DOCUMENT_ROOT}/app/$1.php -f
RewriteRule ^(.+?)/?$ /$1.php [L]

How can I mod_rewrite and keep query strings?

You need to add the [QSA] flag ("query string append")

RewriteRule ^apps/([A-Za-z0-9-_]+)/?$ index.php&app=$1 [L,QSA]

For page 301 redirects with the [R] flag as opposed to internal rewrites like this one, the query string is automatically appended. However, you must force it with [QSA] for the internal rewrite.

REWRITE URL and keep QUERY STRING in .htaccess

If you want clean URLs then you can simply use:

RewriteRule ^([^/]*)$ /buy?r=$1 [L]

to get example.com/abc123

Or you can use:

RewriteRule ^release/([^/]*)$ /buy?r=$1 [L]

to get example.com/release/abc123.

Just make sure you clear your cache before testing this.

htaccess Redirect URL with GET Parameters

RewriteCond %{QUERY_STRING} ^s=(.*)$ [NC]
RewriteRule ^$ /search/%1? [NC,L,R]

You will likely need the NE (noescape) flag on the RewriteRule directive if you are receiving a %-encoded URL parameter value, otherwise the target URL will be doubly-encoded. The QUERY_STRING server variable is not decoded by Apache.

It also depends on how you are rewriting /search/query back to /?s=query (or presumably more like /index.php?s=query?) - presumably you are already doing this later in the config? You only want this redirect to apply to direct requests and not rewritten requests (otherwise you'll get a redirect loop). An easy way to ensure this is to check that the REDIRECT_STATUS env var is empty.

For example:

RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteCond %{QUERY_STRING} ^s=(.*) [NC]
RewriteRule ^$ /search/%1 [NE,QSD,R,L]

Other points:

• The QSD flag would be preferable (on Apache 2.4) to appending ? to the end of the susbtitution string in order to remove the query string.
• The regex ^s=(.*) (the trailing $ was superfluous) does assume that s is the only URL parameter at the start of the query string. As it stands, everything is assumed to be part of this value. eg. s=foo&bar=1 will result in /search/foo&bar=1.
• The NC flag on the RewriteRule directive is superfluous.
• Should you also be checking for /index.php?s=<query>? (Or whatever file/DirectoryIndex is handling the request.)

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