title: How to detect if a certain amount of time has passed in PHP/MySQL?
body: <p>I have a time stamp in a MySQL database that looks like this:</p>
  
  <pre><code>2011-02-23 20:39:49
  </code></pre>
  
  <p>How can I detect if a certain amount of time has passed since the creation of that timestamp. In other words if the timestamp was created on February 23, 2010 at 8:39:43 P.M. how can I detect if exactly 10 days (240 hours) have passed since the creation of this timestamp? How to do this in PHP?</p>