title: htaccess compare cookie value and redirect if evaluation returns true/false
body: <p>I would like somebody to help me with an if-else statement in htaccess. What I want is htaccess to read a cookie and check if its value equals a defined value. If it evaluates to false, it should excecute a redirect and prevent from the requested folder to be accessed. Maybe a deny from all would be better if the evaluation returns false.</p>
  
  <p>I know that the following code checks if a named cookie value is set. If it is not set, it will execute the rewrite rule below it. But how can I adjust this line so that it checks if it equals a certain value? </p>
  
  <pre><code>RewriteEngine On
  RewriteCond %{HTTP_COOKIE} !^.*cookie_name.*$ [NC]
  RewriteRule .* http://www.google.com [NC,L]
  </code></pre>
  
  <p>What I would like, but in .htaccess style:</p>
  
  <pre><code>if ($_COOKIE['cookie_name'] != 'specific_value'){
  //rewrite_rule or deny from all.
  }
  </code></pre>