12:26:54 Enable Cell Caching using MemoryGZip method<br />12:26:54 Create new PHPExcel object<br />12:26:54 Set properties<br />12:26:54 Add data<br />12:26:54 Hide 'Phone' and 'fax' columns<br />12:26:54 Set outline levels<br />12:26:54 Freeze panes<br />12:26:54 Rows to repeat at top<br />12:26:55 Write to Excel2007 format<br />12:26:56 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.4710 seconds<br />12:26:56 Current memory usage: 18 MB<br />12:26:56 Peak memory usage: 24 MB<br />12:26:56 Done writing file<br />File has been created in /var/www/html/vendor/phpoffice/phpexcel/Examples<br />