title: Why are my PHP files showing as plain text?
body: <p>I've been writing PHP applications using PHP for a while in WAMP. Now I'm installing PHP and Apache HTTP Server separately on my work PC. I've installed PHP 5, and the latest Apache. I go to localhost and see it works!</p>
  
  <p>Now I add a file called <code>test.php</code> which displays:</p>
  
  <pre><code>&lt;?php
      phpinfo();
  ?&gt;
  </code></pre>
  
  <p>But in the browser it just displays plain text. Is there somewhere I have explicitly tell it to use PHP 5?</p>