03:19:18 Enable Cell Caching using MemoryGZip method<br />03:19:18 Create new PHPExcel object<br />03:19:18 Set properties<br />03:19:18 Add data<br />03:19:18 Hide 'Phone' and 'fax' columns<br />03:19:18 Set outline levels<br />03:19:18 Freeze panes<br />03:19:18 Rows to repeat at top<br />03:19:18 Write to Excel2007 format<br />03:19:20 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.7103 seconds<br />03:19:20 Current memory usage: 23.5 MB<br />03:19:20 Peak memory usage: 26.75 MB<br />03:19:20 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />