title: How can i export to csv or xls using PHP , in different worksheets
body: <p>How can i export data in different work sheets.</p>
  
  <p>If data is more than 25000 , i want to write next 25000 in next worksheet,</p>
  
  <p>in xls data can be in different tabs..</p>
  
  <p>How can i make that structure using PHP export to csv or xls.</p>
  
  <p>Will it help to reduce load , if i write in different sheets.?</p>