title: hide html columns when exporting to excel
body: <p>I'm trying to export html table using header output in php. I'm using jquery to hide the columns by checkbox event.</p>
  
  <p>My jquery code to unhide and hide column is:</p>
  
  <pre><code>$('.col').css('display','table-cell');
  $('.col').css('display','none');
  </code></pre>
  
  <p>When I export my html table with hidden columns, the hidden columns still appears.
  I want to hide those columns while exporting to excel using php header.</p>
  
  <p>Thanks for your help in advance.</p>