19:31:05 Enable Cell Caching using MemoryGZip method<br />19:31:05 Create new PHPExcel object<br />19:31:05 Set properties<br />19:31:05 Add data<br />19:31:05 Hide 'Phone' and 'fax' columns<br />19:31:05 Set outline levels<br />19:31:05 Freeze panes<br />19:31:05 Rows to repeat at top<br />19:31:06 Write to Excel2007 format<br />19:31:08 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 2.1169 seconds<br />19:31:08 Current memory usage: 20 MB<br />19:31:08 Peak memory usage: 26 MB<br />19:31:08 Done writing file<br />File has been created in /var/www/html/vendor/phpoffice/phpexcel/Examples<br />