05:39:55 Enable Cell Caching using MemoryGZip method<br />05:39:55 Create new PHPExcel object<br />05:39:55 Set properties<br />05:39:55 Add data<br />05:39:55 Hide 'Phone' and 'fax' columns<br />05:39:55 Set outline levels<br />05:39:55 Freeze panes<br />05:39:55 Rows to repeat at top<br />05:39:56 Write to Excel2007 format<br />05:39:58 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.7273 seconds<br />05:39:58 Current memory usage: 23.25 MB<br />05:39:58 Peak memory usage: 26.75 MB<br />05:39:58 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />