19:03:49 Enable Cell Caching using MemoryGZip method<br />19:03:49 Create new PHPExcel object<br />19:03:49 Set properties<br />19:03:49 Add data<br />19:03:49 Hide 'Phone' and 'fax' columns<br />19:03:49 Set outline levels<br />19:03:49 Freeze panes<br />19:03:49 Rows to repeat at top<br />19:03:50 Write to Excel2007 format<br />19:03:52 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 2.4564 seconds<br />19:03:52 Current memory usage: 20 MB<br />19:03:52 Peak memory usage: 26 MB<br />19:03:52 Done writing file<br />File has been created in /var/www/html/petroerp3/vendor/phpoffice/phpexcel/Examples<br />