title: adding 1 day to a DATETIME format value
body: <p>In certain situations I want to add 1 day to the value of my DATETIME formatted variable:</p>
  
  <pre><code>$start_date = date('Y-m-d H:i:s', strtotime("{$_GET['start_hours']}:{$_GET['start_minutes']} {$_GET['start_ampm']}"));
  </code></pre>
  
  <p>What is the best way to do this?</p>