title: Loading progress in php, ajax or javascript?
body: <p>Any one know how can I display the loading progress with completed % on my client side while the system is still getting data in the server side.</p>
  
  <p>For example, when I press 'ok' button in the client side, it will call to server side to collect data from the database, the whole process may take 2 to 3 mins. How can I display the loading progress on the client side (about how many % of the loding have been done)?</p>
  
  <p>How can I do it in php, ajax or javascript?</p>