17:09:22 Enable Cell Caching using MemoryGZip method<br />17:09:22 Create new PHPExcel object<br />17:09:22 Set properties<br />17:09:22 Add data<br />17:09:22 Hide 'Phone' and 'fax' columns<br />17:09:22 Set outline levels<br />17:09:22 Freeze panes<br />17:09:22 Rows to repeat at top<br />17:09:23 Write to Excel2007 format<br />17:09:25 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.7210 seconds<br />17:09:25 Current memory usage: 23.75 MB<br />17:09:25 Peak memory usage: 26.75 MB<br />17:09:25 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />