06:12:01 Enable Cell Caching using MemoryGZip method<br />06:12:01 Create new PHPExcel object<br />06:12:01 Set properties<br />06:12:01 Add data<br />06:12:01 Hide 'Phone' and 'fax' columns<br />06:12:01 Set outline levels<br />06:12:01 Freeze panes<br />06:12:01 Rows to repeat at top<br />06:12:02 Write to Excel2007 format<br />06:12:04 File written to 06largescale-with-cellcaching.xlsx<br />Call time to write Workbook was 1.9251 seconds<br />06:12:04 Current memory usage: 20 MB<br />06:12:04 Peak memory usage: 26 MB<br />06:12:04 Done writing file<br />File has been created in /var/www/billing.andrewpeng.net/vendor/turbo124/phpexcel/Examples<br />