22:54:09 Enable Cell Caching using MemoryGZip method<br />22:54:09 Create new PHPExcel object<br />22:54:09 Set properties<br />22:54:09 Add data<br />22:54:09 Hide 'Phone' and 'fax' columns<br />22:54:09 Set outline levels<br />22:54:09 Freeze panes<br />22:54:09 Rows to repeat at top<br />22:54:09 Write to Excel2007 format<br />22:54:10 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 0.7102 seconds<br />22:54:10 Current memory usage: 20 MB<br />22:54:10 Peak memory usage: 26 MB<br />22:54:10 Done writing file<br />File has been created in /home/autourdey/invoice/vendor/phpoffice/phpexcel/Examples<br />