title: Add 1 year to Date and minus 1 Day at the same time
body: <p>What is the best way of adding to existing date 1 year and removing 1 day. So if todays date is 04/09/2013 I would like to have new date 03/09/2014. There is as well issue every 4 years year got 366 days instead of 365 and of course it should change month if start date is
  01/09/2013 then end date should be 31/08/2014. Please help. My date fields looks like that. i think so I have to do something with mktime or time ?</p>
  
  <pre><code>$renewalDate = date('d F Y', strtotime($rows['CoverStartDate']));
  </code></pre>