20:07:10 Enable Cell Caching using MemoryGZip method<br />20:07:10 Create new PHPExcel object<br />20:07:10 Set properties<br />20:07:10 Add data<br />20:07:10 Hide 'Phone' and 'fax' columns<br />20:07:10 Set outline levels<br />20:07:10 Freeze panes<br />20:07:10 Rows to repeat at top<br />20:07:11 Write to Excel2007 format<br />20:07:12 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.1821 seconds<br />20:07:12 Current memory usage: 20 MB<br />20:07:12 Peak memory usage: 26 MB<br />20:07:12 Done writing file<br />File has been created in /var/www/html/petroerp3/vendor/phpoffice/phpexcel/Examples<br />