19:36:28 Enable Cell Caching using MemoryGZip method<br />19:36:28 Create new PHPExcel object<br />19:36:28 Set properties<br />19:36:28 Add data<br />19:36:28 Hide 'Phone' and 'fax' columns<br />19:36:28 Set outline levels<br />19:36:28 Freeze panes<br />19:36:28 Rows to repeat at top<br />19:36:28 Write to Excel2007 format<br />19:36:30 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.7333 seconds<br />19:36:30 Current memory usage: 28 MB<br />19:36:30 Peak memory usage: 31 MB<br />19:36:30 Done writing file<br />File has been created in /var/www/dolphin/vendor/phpoffice/phpexcel/Examples<br />