title: Calculate difference between two dates in form `X years, Y months, Z week, A day`
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/1083955/how-to-get-difference-between-two-dates-in-year-month-week-day">How to get difference between two dates in Year/Month/Week/Day?</a>  </p>
  </blockquote>
  
  
  
  <p>How do i calculate exact difference between to date including years, days, moths, weeks. Just like windows calculator does. ?</p>
  
  <p>And represent like this <code>1 years, 1 months, 1 week, 1 day</code></p>