15:21:32 Enable Cell Caching using MemoryGZip method<br />15:21:32 Create new PHPExcel object<br />15:21:32 Set properties<br />15:21:32 Add data<br />15:21:32 Hide 'Phone' and 'fax' columns<br />15:21:32 Set outline levels<br />15:21:32 Freeze panes<br />15:21:32 Rows to repeat at top<br />15:21:33 Write to Excel2007 format<br />15:21:34 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 0.9268 seconds<br />15:21:34 Current memory usage: 24 MB<br />15:21:34 Peak memory usage: 28 MB<br />15:21:34 Done writing file<br />File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples<br />