title: 404 file not found when requiring PHP file
body: <p>So I have this PHP file which has an Ajax call of a file called, let's say test.php. This test.php requires two files, this is how they're called:</p>
  
  <pre><code>require('../folder1/folder2/header.php');
  require('../wp-blog-header.php');
  </code></pre>
  
  <p>So, if I remove the second line of code, it works just fine, but as soon as I add that second line it no longer works, the Network tab in console gives me 404.</p>
  
  <p>The wordpress file and the folder1 are in the same directory.</p>