22:52:21 Enable Cell Caching using MemoryGZip method<br />22:52:21 Create new PHPExcel object<br />22:52:21 Set properties<br />22:52:21 Add data<br />22:52:21 Hide 'Phone' and 'fax' columns<br />22:52:21 Set outline levels<br />22:52:21 Freeze panes<br />22:52:21 Rows to repeat at top<br />22:52:22 Write to Excel2007 format<br />22:52:24 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.7370 seconds<br />22:52:24 Current memory usage: 24.5 MB<br />22:52:24 Peak memory usage: 27.25 MB<br />22:52:24 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />