13:08:47 Enable Cell Caching using MemoryGZip method<br />13:08:47 Create new PHPExcel object<br />13:08:47 Set properties<br />13:08:47 Add data<br />13:08:47 Hide 'Phone' and 'fax' columns<br />13:08:47 Set outline levels<br />13:08:47 Freeze panes<br />13:08:47 Rows to repeat at top<br />13:08:48 Write to Excel2007 format<br />13:08:49 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.6956 seconds<br />13:08:49 Current memory usage: 23.5 MB<br />13:08:49 Peak memory usage: 26.75 MB<br />13:08:49 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />