title: Working with $_GET[page_id]
body: <p>Okay, this might be a basic question.
  Here is my code:</p>
  
  <pre><code>&lt;?php $pageid = $_GET[page_id]; ?&gt;
  </code></pre>
  
  <p>And then:</p>
  
  <pre><code>&lt;a href="" &lt;?php if($pageid == '2' OR $pageid == '9') { echo...
  </code></pre>
  
  <p>So this makes it so that if they are on page ID 2 or 9, then it will echo a message. Now what I want to do is that I want to add index.php as one of those pages. But index.php does not have a page id. So I want <code>&lt;?php if($pageid == '2' OR $pageid == '9' OR index.php) { echo...</code>
  How the heck do I do that? Just placing the filename wont work obviously.</p>