15:15:15 Enable Cell Caching using MemoryGZip method<br />15:15:15 Create new PHPExcel object<br />15:15:15 Set properties<br />15:15:15 Add data<br />15:15:15 Hide 'Phone' and 'fax' columns<br />15:15:15 Set outline levels<br />15:15:15 Freeze panes<br />15:15:15 Rows to repeat at top<br />15:15:16 Write to Excel2007 format<br />15:15:18 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.8209 seconds<br />15:15:18 Current memory usage: 23.5 MB<br />15:15:18 Peak memory usage: 26.75 MB<br />15:15:18 Done writing file<br />File has been created in /var/www/hobn/vendor/phpoffice/phpexcel/Examples<br />