title: How to get unique value in multidimensional 3D array?
body: <p>How I can get uniques values from a <strong>multidimensional array</strong>?</p>
  
  <pre class="lang-php prettyprint-override"><code>$arr = array(
      array(
          array("avg"),
          array("responsecnt"),
          "other" =&gt; array ("surveycomplete"),
      ),
      array(
          array("avg","responsecnt"),
          array("responsecnt"),
          "other" =&gt; array ("surveycomplete"),
      ),
      array(
          array("avg","abc"),
          array("responsecnt","xyz"),
          "other" =&gt; array ("surveycomplete", "yes"),
      ),
      array(
          array("avg"),
          array("responsecnt"),
          "other" =&gt; array ("surveycomplete"),
      )
  );
  echo "&lt;pre&gt;";
  print_r($arr);
  //find unique value
  </code></pre>
  
  <p>I need some way to find unique values in the array above. Can someone help me?</p>