15:01:05 Enable Cell Caching using MemoryGZip method<br />15:01:05 Create new PHPExcel object<br />15:01:05 Set properties<br />15:01:05 Add data<br />15:01:05 Hide 'Phone' and 'fax' columns<br />15:01:05 Set outline levels<br />15:01:05 Freeze panes<br />15:01:05 Rows to repeat at top<br />15:01:05 Write to Excel2007 format<br />15:01:07 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.2332 seconds<br />15:01:07 Current memory usage: 20 MB<br />15:01:07 Peak memory usage: 26 MB<br />15:01:07 Done writing file<br />File has been created in /var/www/html/vendor/phpoffice/phpexcel/Examples<br />