13:08:47 Enable Cell Caching using MemoryGZip method
13:08:47 Create new PHPExcel object
13:08:47 Set properties
13:08:47 Add data
13:08:47 Hide 'Phone' and 'fax' columns
13:08:47 Set outline levels
13:08:47 Freeze panes
13:08:47 Rows to repeat at top
13:08:48 Write to Excel2007 format
13:08:49 File written to 06largescale-with-cellcaching.xlsx
Call time to write Workbook was 1.6956 seconds
13:08:49 Current memory usage: 23.5 MB
13:08:49 Peak memory usage: 26.75 MB
13:08:49 Done writing file
File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples