title: PHP $_SERVER not working
body: <p>I have tried to write a script that takes the users IP address,but for
  some reason the <code>$_SERVER</code> variable is not receiving any values,so I tested 
  it if it's actually containing anything and the result was empty. 
  It's the same story with <code>$_GET</code>,<code>$_POST</code>.Is there someone who had similar problem, because I saw a guy in Youtube making a script similar to mine 
  and he didn't have this error.</p>
  
  <pre><code>$http_client_IP  =  $_SERVER["HTTP_CLIENT_IP"];
  
     if ( empty($http_client_ip)){
         echo 'empty'; // and the result is empty 
     }
  
  
  
  ?&gt;
  </code></pre>