title: How do I add an if / else?
body: <p>I am using the following code to pass a variable. <code>if variable = a</code>, do nothing.</p>
  
  <p>I then want to check <code>if variable = a</code>, do nothing, <code>if b</code>, do nothing, else do something</p>
  
  <pre><code>&lt;?
      if($_GET['pageid'] == 'a'){
      } else {
      include('header_image.php');
      }   
  ?&gt;
  </code></pre>
  
  <p>Above is the code I have working correctly for one vartiable.</p>
  
  <p>How do I add an if / else?</p>