title: Htaccess internal redirect for specific file not working
body: <p>I currently use the following htaccess code to remove all .php extensions:</p>
  
  <pre><code>RewriteCond %{ENV:REDIRECT_STATUS} ^$
  RewriteCond %{REQUEST_FILENAME} \.php$
  RewriteRule .* - [F]
  
  RewriteCond %{REQUEST_FILENAME} !-f    
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME}.php -f
  RewriteRule ^(.+[^/])/?$ $1.php [L]
  </code></pre>
  
  <p>ive been trying to use the following htaccess code to internally redirect or add a hidden query parameter to a file</p>
  
  <pre><code>RewriteRule ^myfile/?([^/])?/?$ myfile.php?m=$1 [L]
  </code></pre>
  
  <p>but it does not work.</p>