title: How to find time difference between two dates using PHP
body: <p>How to find time difference between two dates using PHP.</p>
  
  <p>For example i am having two dates:</p>
  
  <p><strong>start Date : 2010-07-30 00:00:00</strong></p>
  
  <p><strong>end Date   : 2010-07-30 00:00:00</strong></p>
  
  <p>In this case how shall i find the <strong>time difference using PHP</strong>.</p>