09:17:13 Enable Cell Caching using MemoryGZip method<br />09:17:13 Create new PHPExcel object<br />09:17:13 Set properties<br />09:17:13 Add data<br />09:17:13 Hide 'Phone' and 'fax' columns<br />09:17:13 Set outline levels<br />09:17:13 Freeze panes<br />09:17:13 Rows to repeat at top<br />09:17:14 Write to Excel2007 format<br />09:17:16 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.9381 seconds<br />09:17:16 Current memory usage: 22 MB<br />09:17:16 Peak memory usage: 28 MB<br />09:17:16 Done writing file<br />File has been created in /var/www/billing.andrewpeng.net/vendor/turbo124/phpexcel/Examples<br />