20:16:42 Enable Cell Caching using MemoryGZip method
20:16:42 Create new PHPExcel object
20:16:42 Set properties
20:16:42 Add data
20:16:42 Hide 'Phone' and 'fax' columns
20:16:42 Set outline levels
20:16:42 Freeze panes
20:16:42 Rows to repeat at top
20:16:43 Write to Excel2007 format
20:16:45 File written to 06largescale-with-cellcaching.xlsx
Call time to write Workbook was 1.7076 seconds
20:16:45 Current memory usage: 23.5 MB
20:16:45 Peak memory usage: 26.75 MB
20:16:45 Done writing file
File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples