title: Calculates difference between two dates in PHP
body: <p>HI, i have a couple of posts in my MySql database server, one of the info content in each post is the date and time in the format <strong>datetime</strong> (Ex. 2010-11-26 21:55:09) when the post was made.</p>
  
  <p>So, i want to retrive the actual date and time from the SQL server with the function NOW() and calculates how many seconds or minutes or hours or days ago was post the info.</p>
  
  <p>I dont know how to create this php script but i know that for sure is allready made, so thanks for any help.</p>