20:16:42 Enable Cell Caching using MemoryGZip method<br />20:16:42 Create new PHPExcel object<br />20:16:42 Set properties<br />20:16:42 Add data<br />20:16:42 Hide 'Phone' and 'fax' columns<br />20:16:42 Set outline levels<br />20:16:42 Freeze panes<br />20:16:42 Rows to repeat at top<br />20:16:43 Write to Excel2007 format<br />20:16:45 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.7076 seconds<br />20:16:45 Current memory usage: 23.5 MB<br />20:16:45 Peak memory usage: 26.75 MB<br />20:16:45 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />