16:28:33 Enable Cell Caching using MemoryGZip method<br />16:28:33 Create new PHPExcel object<br />16:28:33 Set properties<br />16:28:33 Add data<br />16:28:33 Hide 'Phone' and 'fax' columns<br />16:28:33 Set outline levels<br />16:28:33 Freeze panes<br />16:28:33 Rows to repeat at top<br />16:28:33 Write to Excel2007 format<br />16:28:34 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 0.9253 seconds<br />16:28:34 Current memory usage: 22 MB<br />16:28:34 Peak memory usage: 26 MB<br />16:28:34 Done writing file<br />File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples<br />