17:55:05 Enable Cell Caching using MemoryGZip method<br />17:55:05 Create new PHPExcel object<br />17:55:05 Set properties<br />17:55:05 Add data<br />17:55:05 Hide 'Phone' and 'fax' columns<br />17:55:05 Set outline levels<br />17:55:05 Freeze panes<br />17:55:05 Rows to repeat at top<br />17:55:06 Write to Excel2007 format<br />17:55:08 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.7039 seconds<br />17:55:08 Current memory usage: 23.5 MB<br />17:55:08 Peak memory usage: 26.75 MB<br />17:55:08 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />