20:09:12 Enable Cell Caching using MemoryGZip method<br />20:09:12 Create new PHPExcel object<br />20:09:12 Set properties<br />20:09:12 Add data<br />20:09:12 Hide 'Phone' and 'fax' columns<br />20:09:12 Set outline levels<br />20:09:12 Freeze panes<br />20:09:12 Rows to repeat at top<br />20:09:13 Write to Excel2007 format<br />20:09:14 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 0.6944 seconds<br />20:09:14 Current memory usage: 4 MB<br />20:09:14 Peak memory usage: 10 MB<br />20:09:14 Done writing file<br />File has been created in /home/hycmvsgn/heal.co.ke/invoices/vendor/phpoffice/phpexcel/Examples<br />