title: php string in a date format, add 12 hours
body: <p>I have this <code>string</code> object in my php array</p>
  
  <p>"2013-03-05 00:00:00+00"</p>
  
  <p>I would like to add 12 hours to the entry within PHP, then save it back to string in the same format</p>
  
  <p>I believe this involves converting the string to a date object. But I'm not sure how smart the date object is and if I need to tell it formatting parameters or if it is supposed to just take the string</p>
  
  <pre><code>$date = new DateTime("2013-03-05 00:00:00+00");
  $date-&gt;add("+12 hours");
  //then convert back to string or just assign it to a variable within the array node
  </code></pre>
  
  <p>I was getting back empty values from this method or a similar one I tried</p>
  
  <p>How would you solve this issue?</p>
  
  <p>Thanks, your insight is appreciated</p>