title: get first non-null value from array php
body: <p>If I have an array:</p>
  
  <pre><code>Array
  (
      [0] =&gt; 
      [1] =&gt; a
      [2] =&gt; b
      [3] =&gt; c
  )
  </code></pre>
  
  <p>And I want to get the first non-null value from the array, in this case "a".  How could I go about doing that nice and easily?</p>