title: Get most recent date from an array of dates in "Y-m-d H:i:s" format
body: <p>I have the array of dates in <code>Y-m-d H:i:s</code> format like:</p>
  <pre><code>array(5) { 
      [0]=&gt; string(19) &quot;2012-06-11 08:30:49&quot; 
      [1]=&gt; string(19) &quot;2012-06-07 08:03:54&quot; 
      [2]=&gt; string(19) &quot;2012-05-26 23:04:04&quot; 
      [3]=&gt; string(19) &quot;2012-05-27 08:30:00&quot; 
      [4]=&gt; string(19) &quot;2012-06-08 08:30:55&quot; 
  }
  </code></pre>
  <p>I would like to know the <em><strong>most recent date</strong></em>.</p>
  <p>In other words, today is June 13th 2012, which datetime is closest to today's date?</p>
  <p>From my sample array, I am expecting <code>2012-06-11 08:30:49</code>.</p>
  <p>How can I do that?</p>