15:54:27 Enable Cell Caching using MemoryGZip method<br />15:54:27 Create new PHPExcel object<br />15:54:27 Set properties<br />15:54:27 Add data<br />15:54:27 Hide 'Phone' and 'fax' columns<br />15:54:27 Set outline levels<br />15:54:27 Freeze panes<br />15:54:27 Rows to repeat at top<br />15:54:28 Write to Excel2007 format<br />15:54:30 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 2.3127 seconds<br />15:54:30 Current memory usage: 28 MB<br />15:54:30 Peak memory usage: 31 MB<br />15:54:30 Done writing file<br />File has been created in /var/www/rmz31/vendor/phpoffice/phpexcel/Examples<br />