12:08:29 Enable Cell Caching using MemoryGZip method<br />12:08:29 Create new PHPExcel object<br />12:08:29 Set properties<br />12:08:29 Add data<br />12:08:29 Hide 'Phone' and 'fax' columns<br />12:08:29 Set outline levels<br />12:08:29 Freeze panes<br />12:08:29 Rows to repeat at top<br />12:08:30 Write to Excel2007 format<br />12:08:31 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.8645 seconds<br />12:08:31 Current memory usage: 16 MB<br />12:08:31 Peak memory usage: 22 MB<br />12:08:31 Done writing file<br />File has been created in /var/www/html/vendor/phpoffice/phpexcel/Examples<br />