title: How to check if multiple array keys exists
body: <p>I have a variety of arrays that will either contain</p>
  
  <pre><code>story &amp; message
  </code></pre>
  
  <p>or just </p>
  
  <pre><code>story
  </code></pre>
  
  <p>How would I check to see if an array contains both story and message?  <code>array_key_exists()</code> only looks for that single key in the array.  </p>
  
  <p>Is there a way to do this?</p>