16:06:44 Enable Cell Caching using MemoryGZip method<br />16:06:44 Create new PHPExcel object<br />16:06:44 Set properties<br />16:06:44 Add data<br />16:06:44 Hide 'Phone' and 'fax' columns<br />16:06:44 Set outline levels<br />16:06:44 Freeze panes<br />16:06:44 Rows to repeat at top<br />16:06:45 Write to Excel2007 format<br />16:06:47 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.5196 seconds<br />16:06:47 Current memory usage: 18 MB<br />16:06:47 Peak memory usage: 22 MB<br />16:06:47 Done writing file<br />File has been created in /var/www/chart_maker/vendor/phpoffice/phpexcel/Examples<br />