Tips for debugging .htaccess rewrite rules

Question

Many posters have problems debugging their RewriteRule and RewriteCond statements within their .htaccess files. Most of these are using a shar

Answer 1

(Similar to Doin idea) To show what is being matched, I use this code

$keys = array_keys($_GET);
foreach($keys as $i=>$key){
    echo "$i => $key 
";
}

Save it to r.php on the server root and then do some tests in .htaccess
For example, i want to match urls that do not start with a language prefix

RewriteRule ^(?!(en|de)/)(.*)$ /r.php?$1&$2 [L] #$1&$2&...
RewriteRule ^(.*)$ /r.php?nomatch [L] #report nomatch and exit