18:54:05 Enable Cell Caching using MemoryGZip method<br />18:54:05 Create new PHPExcel object<br />18:54:05 Set properties<br />18:54:05 Add data<br />18:54:05 Hide 'Phone' and 'fax' columns<br />18:54:05 Set outline levels<br />18:54:05 Freeze panes<br />18:54:05 Rows to repeat at top<br />18:54:05 Write to Excel2007 format<br />18:54:07 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.2857 seconds<br />18:54:07 Current memory usage: 18 MB<br />18:54:07 Peak memory usage: 24 MB<br />18:54:07 Done writing file<br />File has been created in /var/www/php7.3/fed/vendor/phpoffice/phpexcel/Examples<br />