title: Scan current folder using PHP
body: <p>I have a folder structure like this:</p>
  
  <pre><code>/articles
       .index.php
       .second.php
       .third.php
       .fourth.php
  </code></pre>
  
  <p>If I'm writing my code in second.php, how can I scan the current folder(articles)? </p>
  
  <p>Thanks</p>