title: PHP variable passing
body: <p>I'm working with drupal. I have this page something.com/node/13. Inside I have this script</p>
  
  <pre><code> &lt;?php
   $door = $_GET["variable"];
   echo $door;
   ?&gt;
  </code></pre>
  
  <p>When I open the URL like this something.com/node/13?variable=1231 I get the following error:</p>
  
  <pre><code>  Error message
    Notice: Undefined index: variable in eval() (line 2 of /var/www/html/modules/php/php.module(74) : eval()'d code).
  </code></pre>
  
  <p>and no output. Any ideas what I might be doing wrong?</p>