18:59:16 Enable Cell Caching using MemoryGZip method<br />18:59:16 Create new PHPExcel object<br />18:59:16 Set properties<br />18:59:16 Add data<br />18:59:16 Hide 'Phone' and 'fax' columns<br />18:59:16 Set outline levels<br />18:59:16 Freeze panes<br />18:59:16 Rows to repeat at top<br />18:59:16 Write to Excel2007 format<br />18:59:17 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 0.9742 seconds<br />18:59:17 Current memory usage: 24 MB<br />18:59:17 Peak memory usage: 24 MB<br />18:59:17 Done writing file<br />File has been created in /home/autourdey/invoice/vendor/phpoffice/phpexcel/Examples<br />