title: Add 'x' number of hours to date
body: <p>I currently have php returning the current date/time like so: </p>
  
  <pre><code>$now = date("Y-m-d H:m:s");
  </code></pre>
  
  <p>What I'd like to do is have a new variable <code>$new_time</code> equal <code>$now + $hours</code>, where <code>$hours</code> is a number of hours ranging from 24 to 800. </p>
  
  <p>Any suggestions? </p>