01:36:17 Enable Cell Caching using MemoryGZip method<br />01:36:17 Create new PHPExcel object<br />01:36:17 Set properties<br />01:36:17 Add data<br />01:36:17 Hide 'Phone' and 'fax' columns<br />01:36:17 Set outline levels<br />01:36:17 Freeze panes<br />01:36:17 Rows to repeat at top<br />01:36:18 Write to Excel2007 format<br />01:36:20 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.6940 seconds<br />01:36:20 Current memory usage: 23.75 MB<br />01:36:20 Peak memory usage: 26.75 MB<br />01:36:20 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />