title: Cross-Origin Request Headers(CORS) with PHP headers
body: <p>I have a simple PHP script that I am attempting a cross-domain CORS request:</p>
  
  <pre><code>&lt;?php
  header("Access-Control-Allow-Origin: *");
  header("Access-Control-Allow-Headers: *");
  ...
  </code></pre>
  
  <p>Yet I still get the error:</p>
  
  <blockquote>
    <p>Request header field <code>X-Requested-With</code> is not allowed by <code>Access-Control-Allow-Headers</code></p>
  </blockquote>
  
  <p>Anything I'm missing?</p>