title: Add minutes to strtotime
body: <p>If i have a varible</p>
  
  <pre><code>// in minutes
  $min = 40;
  </code></pre>
  
  <p>And i want to add it to a strotime formatted time</p>
  
  <pre><code>$strtTime = $strtotime('now') + $min; 
  </code></pre>
  
  <p>whats the correct way to do this?</p>