16:16:26 Enable Cell Caching using MemoryGZip method<br />16:16:26 Create new PHPExcel object<br />16:16:26 Set properties<br />16:16:26 Add data<br />16:16:26 Hide 'Phone' and 'fax' columns<br />16:16:26 Set outline levels<br />16:16:26 Freeze panes<br />16:16:26 Rows to repeat at top<br />16:16:27 Write to Excel2007 format<br />16:16:29 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.5442 seconds<br />16:16:29 Current memory usage: 24 MB<br />16:16:29 Peak memory usage: 28 MB<br />16:16:29 Done writing file<br />File has been created in /var/www/chart_maker/vendor/phpoffice/phpexcel/Examples<br />